diff --git a/index.html b/index.html
index e05c060e..b852ad3c 100644
--- a/index.html
+++ b/index.html
@@ -2017,11 +2017,14 @@
             </button>
             <button
               id="regenerateStates"
-              data-tip="Click to select new capitals and regenerate unlocked states. Emblems and military forces will be regenerated as well, burgs will remain as they are"
+              data-tip="Click to select new capitals and regenerate non-locked states. Emblems and military forces will be regenerated as well, burgs will remain as they are"
             >
               States
             </button>
-            <button id="regenerateProvinces" data-tip="Click to regenerate unlocked provinces. States will remain as they are">
+            <button
+              id="regenerateProvinces"
+              data-tip="Click to regenerate non-locked provinces. States will remain as they are"
+            >
               Provinces
             </button>
             <button
@@ -2031,8 +2034,8 @@
               Burgs
             </button>
             <button id="regenerateEmblems" data-tip="Click to regenerate all emblems">Emblems</button>
-            <button id="regenerateReligions" data-tip="Click to regenerate unlocked religions">Religions</button>
-            <button id="regenerateCultures" data-tip="Click to regenerate unlocked cultures">Cultures</button>
+            <button id="regenerateReligions" data-tip="Click to regenerate non-locked religions">Religions</button>
+            <button id="regenerateCultures" data-tip="Click to regenerate non-locked cultures">Cultures</button>
             <button
               id="regenerateMilitary"
               data-tip="Click to recalculate military forces based on current military options"
diff --git a/modules/burgs-and-states.js b/modules/burgs-and-states.js
index 11ce30b8..58820cc9 100644
--- a/modules/burgs-and-states.js
+++ b/modules/burgs-and-states.js
@@ -163,144 +163,6 @@ window.BurgsAndStates = (function () {
     }
   };
 
-  const regenerateStates = function() {
-    const localSeed = generateSeed();
-    Math.random = aleaPRNG(localSeed);
-
-    const statesCount = +regionsOutput.value;
-    const burgs = pack.burgs.filter(b => b.i && !b.removed);
-    if (!burgs.length) return tip("There are no any burgs to generate states. Please create burgs first", false, "error");
-    if (burgs.length < statesCount)
-      tip(`Not enough burgs to generate ${statesCount} states. Will generate only ${burgs.length} states`, false, "warn");
-
-    // turn all old capitals into towns, except for the capitals of locked states
-    burgs
-      .filter(b => b.capital && pack.states.find(s => s.lock && s.capital === b.i) === undefined)
-      .forEach(b => {
-        moveBurgToGroup(b.i, "towns");
-        b.capital = 0;
-      });
-
-    // remove emblems
-    document.querySelectorAll("[id^=stateCOA]").forEach(el => el.remove());
-    document.querySelectorAll("[id^=provinceCOA]").forEach(el => el.remove());
-    emblems.selectAll("use").remove();
-
-    unfog();
-
-    if (!statesCount) {
-      tip(`Cannot generate zero states. Please check the <i>States Number</i> option`, false, "warn");
-      pack.states = pack.states.slice(0, 1); // remove all except of neutrals
-      pack.states[0].diplomacy = []; // clear diplomacy
-      pack.provinces = [0]; // remove all provinces
-      pack.cells.state = new Uint16Array(pack.cells.i.length); // reset cells data
-      borders.selectAll("path").remove(); // remove borders
-      regions.selectAll("path").remove(); // remove states fill
-      labels.select("#states").selectAll("text"); // remove state labels
-      defs.select("#textPaths").selectAll("path[id*='stateLabel']").remove(); // remove state labels paths
-
-      if (document.getElementById("burgsOverviewRefresh").offsetParent) burgsOverviewRefresh.click();
-      if (document.getElementById("statesEditorRefresh").offsetParent) statesEditorRefresh.click();
-      return;
-    }
-
-    // burg local ids sorted by a bit randomized population. Also ignore burgs of a locked state.
-    const sortedBurgs = burgs
-      .filter(b => !pack.states[b.state] || !pack.states[b.state].lock)
-      .map((b, i) => [b, b.population * Math.random()])
-      .sort((a, b) => b[1] - a[1])
-      .map(b => b[0]);
-    const capitalsTree = d3.quadtree();
-
-    const neutral = pack.states[0].name; // neutrals name
-    const count = Math.min(statesCount, burgs.length) + 1; // +1 for neutral
-    let spacing = (graphWidth + graphHeight) / 2 / count; // min distance between capitals
-
-    const states = [];
-    // Get all the states to restore
-    let statesToRestore = [];
-    if (pack.states) {
-      pack.states.forEach(state => {
-        if (!state.lock) return;
-
-        statesToRestore.push(state)
-      });
-    }
-
-    d3.range(count).forEach(i => {
-      if (!i) {
-        states.push({i, name: neutral});
-        return;
-      }
-
-      // If we still have states to restore from the locks, restore those first and assign them the right ids.
-      if (statesToRestore.length) {
-        const [toRestore, ...rest] = statesToRestore;
-
-        toRestore.old_i = toRestore.i;
-        toRestore.i = i;
-        states.push(toRestore);
-
-        // Also reassign the state id of all provinces of this state for locked provinces
-        toRestore.provinces.forEach(id => {
-          if (!pack.provinces[id]) return;
-
-          pack.provinces[id].state = toRestore.i;
-          pack.provinces[id].should_restore = true;
-        });
-
-        statesToRestore = rest;
-
-        const {x, y} = burgs[toRestore.capital];
-        capitalsTree.add([x, y]);
-        return;
-      }
-
-      let capital = null;
-      for (const burg of sortedBurgs) {
-        const {x, y} = burg;
-        if (capitalsTree.find(x, y, spacing) === undefined) {
-          burg.capital = 1;
-          capital = burg;
-          capitalsTree.add([x, y]);
-          moveBurgToGroup(burg.i, "cities");
-          break;
-        }
-
-        spacing = Math.max(spacing - 1, 1);
-      }
-
-      const culture = capital.culture;
-      const basename =
-        capital.name.length < 9 && capital.cell % 5 === 0 ? capital.name : Names.getCulture(culture, 3, 6, "", 0);
-      const name = Names.getState(basename, culture);
-      const nomadic = [1, 2, 3, 4].includes(pack.cells.biome[capital.cell]);
-      const type = nomadic
-        ? "Nomadic"
-        : pack.cultures[culture].type === "Nomadic"
-          ? "Generic"
-          : pack.cultures[culture].type;
-      const expansionism = rn(Math.random() * powerInput.value + 1, 1);
-
-      const cultureType = pack.cultures[culture].type;
-      const coa = COA.generate(capital.coa, 0.3, null, cultureType);
-      coa.shield = capital.coa.shield;
-
-      states.push({
-        i,
-        name,
-        type,
-        capital: capital.i,
-        center: capital.cell,
-        culture,
-        expansionism,
-        coa
-      });
-    });
-
-    pack.states = states;
-  }
-
   // define burg coordinates, coa, port status and define details
   const specifyBurgs = function () {
     TIME && console.time("specifyBurgs");
@@ -502,12 +364,6 @@ window.BurgsAndStates = (function () {
     TIME && console.time("expandStates");
     const {cells, states, cultures, burgs} = pack;
 
-    const prevStates = {};
-    if (cells.state) {
-      cells.state.forEach(function (i, index) {
-        prevStates[index] = i;
-      })
-    }
     cells.state = new Uint16Array(cells.i.length);
     const queue = new PriorityQueue({comparator: (a, b) => a.p - b.p});
     const cost = [];
@@ -516,17 +372,6 @@ window.BurgsAndStates = (function () {
     states
       .filter(s => s.i && !s.removed)
       .forEach(s => {
-        if (s.lock) {
-          Object.entries(prevStates).forEach(function ([index, stateId]) {
-            if (stateId === s.old_i) {
-              cells.state[index] = s.i;
-              cost[index] = neutral;
-            }
-          });
-
-          return;
-        }
-
         const capitalCell = burgs[s.capital].cell;
         cells.state[capitalCell] = s.i;
         const cultureCenter = cultures[s.culture].center;
@@ -541,9 +386,9 @@ window.BurgsAndStates = (function () {
       const {type, culture} = states[s];
 
       cells.c[e].forEach(e => {
-        if (cells.state[e] && e === states[cells.state[e]].center) return; // do not overwrite capital cells
-        // Do not overwrite cells from a locked state.
-        if (states[cells.state[e]].lock) return;
+        const state = states[cells.state[e]];
+        if (state.lock) return; // do not overwrite cell of locked states
+        if (cells.state[e] && e === state.center) return; // do not overwrite capital cells
 
         const cultureCost = culture === cells.culture[e] ? -9 : 100;
         const populationCost = cells.h[e] < 20 ? 0 : cells.s[e] ? Math.max(20 - cells.s[e], 0) : 5000;
@@ -608,16 +453,12 @@ window.BurgsAndStates = (function () {
 
     for (const i of cells.i) {
       if (cells.h[i] < 20 || cells.burg[i]) continue; // do not overwrite burgs
+      if (pack.states[cells.state[i]]?.lock) continue; // do not overwrite cells of locks states
       if (cells.c[i].some(c => burgs[cells.burg[c]].capital)) continue; // do not overwrite near capital
-      if (pack.states[cells.state[i]]?.lock) continue; // Do not overwrite cells of locks states
       const neibs = cells.c[i].filter(c => cells.h[c] >= 20);
-      const adversaries = neibs.filter(
-        c => !pack.states[cells.state[c]]?.lock && cells.state[c] !== cells.state[i]
-      );
+      const adversaries = neibs.filter(c => !pack.states[cells.state[c]]?.lock && cells.state[c] !== cells.state[i]);
       if (adversaries.length < 2) continue;
-      const buddies = neibs.filter(
-        c => !pack.states[cells.state[c]]?.lock && cells.state[c] === cells.state[i]
-      );
+      const buddies = neibs.filter(c => !pack.states[cells.state[c]]?.lock && cells.state[c] === cells.state[i]);
       if (buddies.length > 2) continue;
       if (adversaries.length <= buddies.length) continue;
       cells.state[i] = cells.state[adversaries[0]];
@@ -763,18 +604,22 @@ window.BurgsAndStates = (function () {
 
       if (!list) {
         // remove all labels and textpaths
-        g.selectAll("text").filter((_, i) => {
-          const id = g.select(`:nth-child(${i + 1})`).node()?.id;
-          if (!id) return true;
+        g.selectAll("text")
+          .filter((_, i) => {
+            const id = g.select(`:nth-child(${i + 1})`).node()?.id;
+            if (!id) return true;
 
-          return !pack.states.some(s => s.lock && `${s.old_i}` === id.substring(10));
-        }).remove();
-        t.selectAll("path[id*='stateLabel']").filter((_, i) => {
-          const id = t.select(`:nth-child(${i + 1})`).node()?.id;
-          if (!id) return true;
+            return !pack.states.some(s => s.lock && `${s.old_i}` === id.substring(10));
+          })
+          .remove();
+        t.selectAll("path[id*='stateLabel']")
+          .filter((_, i) => {
+            const id = t.select(`:nth-child(${i + 1})`).node()?.id;
+            if (!id) return true;
 
-          return !pack.states.some(s => s.lock && `${s.old_i}` === id.substring(19));
-        }).remove();
+            return !pack.states.some(s => s.lock && `${s.old_i}` === id.substring(19));
+          })
+          .remove();
       }
 
       pack.states.forEach(s => {
@@ -787,11 +632,8 @@ window.BurgsAndStates = (function () {
         const labelNode = g.select(`#stateLabel${s.old_i}`);
         const textNode = t.select(`#textPath_stateLabel${s.old_i}`);
 
-        labelNode
-          .attr('id', `stateLabel${s.i}`)
-          .select("textPath")
-          .attr("xlink:href", `#textPath_stateLabel${s.i}`);
-        textNode.attr('id', `textPath_stateLabel${s.i}`);
+        labelNode.attr("id", `stateLabel${s.i}`).select("textPath").attr("xlink:href", `#textPath_stateLabel${s.i}`);
+        textNode.attr("id", `textPath_stateLabel${s.i}`);
       });
 
       const example = g.append("text").attr("x", 0).attr("x", 0).text("Average");
@@ -1332,25 +1174,20 @@ window.BurgsAndStates = (function () {
     return adjName ? `${getAdjective(s.name)} ${s.formName}` : `${s.formName} of ${s.name}`;
   };
 
-  const generateProvinces = function (
-      regenerate = false,
-      ignoreLockedStates = false
-  ) {
+  const generateProvinces = function (regenerate = false, ignoreLockedStates = false) {
     TIME && console.time("generateProvinces");
     const localSeed = regenerate ? generateSeed() : seed;
     Math.random = aleaPRNG(localSeed);
 
     const {cells, states, burgs} = pack;
-    const provincesToRestore = pack.provinces ?
-      pack.provinces.filter(p => p.lock || p.should_restore)
-      : [];
+    const provincesToRestore = pack.provinces ? pack.provinces.filter(p => p.lock || p.should_restore) : [];
     const provinces = (pack.provinces = [0].concat(...provincesToRestore));
 
     const prevProvinces = {};
     if (cells.province) {
       cells.province.forEach((i, index) => {
         prevProvinces[index] = i;
-      })
+      });
     }
     cells.province = new Uint16Array(cells.i.length); // cell state
     const percentage = +provincesInput.value;
@@ -1380,8 +1217,9 @@ window.BurgsAndStates = (function () {
       if (!s.i || s.removed) return;
       const stateBurgs = burgs
         // Filter for burgs of this state that haven't been removed and that are not in a locked province.
-        .filter(b =>
-          b.state === s.i && !b.removed && provincesToRestore.find(p => prevProvinces[b.cell] === p.i) === undefined
+        .filter(
+          b =>
+            b.state === s.i && !b.removed && provincesToRestore.find(p => prevProvinces[b.cell] === p.i) === undefined
         )
         .sort((a, b) => b.population * gauss(1, 0.2, 0.5, 1.5, 3) - a.population)
         .sort((a, b) => b.capital - a.capital);
@@ -1450,16 +1288,15 @@ window.BurgsAndStates = (function () {
         // Do not overwrite cells from a locked state or province.
         if (
           (provinces[cells.province[e]] && provinces[cells.province[e]].lock) ||
-          (
-            // For finding if the state is locked, first make sure we care about that
-            // then find the province, the state for the province, and if both are defined,
-            // check the lock.
-            !ignoreLockedStates &&
+          // For finding if the state is locked, first make sure we care about that
+          // then find the province, the state for the province, and if both are defined,
+          // check the lock.
+          (!ignoreLockedStates &&
             provinces[cells.province[e]] &&
             states[provinces[cells.province[e]].state] &&
-            states[provinces[cells.province[e]].state].lock
-          )
-        ) return;
+            states[provinces[cells.province[e]].state].lock)
+        )
+          return;
 
         const land = cells.h[e] >= 20;
         if (!land && !cells.t[e]) return; // cannot pass deep ocean
@@ -1480,17 +1317,16 @@ window.BurgsAndStates = (function () {
     for (const i of cells.i) {
       if (cells.burg[i]) continue; // do not overwrite burgs
       // Do not process any locked provinces or states, if we care about the latter
-      if (
-          pack.provinces[cells.province[i]].lock ||
-          (!ignoreLockedStates && pack.states[cells.state[i]].lock)
-      ) continue;
+      if (pack.provinces[cells.province[i]].lock || (!ignoreLockedStates && pack.states[cells.state[i]].lock)) continue;
       // Find neighbors, but ignore any cells from locked states or provinces
-      const neibs = cells.c[i].filter(
-        c =>
-          (ignoreLockedStates || !pack.states[cells.state[c]].lock) &&
-          !pack.provinces[cells.province[c]].lock &&
-          cells.state[c] === cells.state[i]
-      ).map(c => cells.province[c]);
+      const neibs = cells.c[i]
+        .filter(
+          c =>
+            (ignoreLockedStates || !pack.states[cells.state[c]].lock) &&
+            !pack.provinces[cells.province[c]].lock &&
+            cells.state[c] === cells.state[i]
+        )
+        .map(c => cells.province[c]);
       const adversaries = neibs.filter(c => c !== cells.province[i]);
       if (adversaries.length < 2) continue;
       const buddies = neibs.filter(c => c === cells.province[i]).length;
@@ -1613,7 +1449,6 @@ window.BurgsAndStates = (function () {
 
   return {
     generate,
-    regenerateStates,
     expandStates,
     normalizeStates,
     assignColors,
diff --git a/modules/dynamic/editors/states-editor.js b/modules/dynamic/editors/states-editor.js
index 85705b9d..773d421d 100644
--- a/modules/dynamic/editors/states-editor.js
+++ b/modules/dynamic/editors/states-editor.js
@@ -153,7 +153,8 @@ function addListeners() {
     else if (classList.contains("statePopulation")) changePopulation(stateId);
     else if (classList.contains("icon-pin")) toggleFog(stateId, classList);
     else if (classList.contains("icon-trash-empty")) stateRemovePrompt(stateId);
-    else if (classList.contains("icon-lock") || classList.contains("icon-lock-open")) updateLockStatus(stateId, classList);
+    else if (classList.contains("icon-lock") || classList.contains("icon-lock-open"))
+      updateLockStatus(stateId, classList);
   });
 
   $body.on("input", function (ev) {
@@ -289,7 +290,9 @@ function statesEditorAddLines() {
       <span data-tip="Cells count" class="icon-check-empty ${hidden} show hide"></span>
       <div data-tip="Cells count" class="stateCells ${hidden} show hide">${s.cells}</div>
       <span data-tip="Toggle state focus" class="icon-pin ${focused ? "" : " inactive"} hide"></span>
-      <span data-tip="Lock the state" class="icon-lock${s.lock ? '' : '-open'} hide"></span>
+      <span data-tip="Lock the state to protect it from re-generation" class="icon-lock${
+        s.lock ? "" : "-open"
+      } hide"></span>
       <span data-tip="Remove the state" class="icon-trash-empty hide"></span>
     </div>`;
   }
diff --git a/modules/ui/tools.js b/modules/ui/tools.js
index 46e3195f..532c0da2 100644
--- a/modules/ui/tools.js
+++ b/modules/ui/tools.js
@@ -1,4 +1,5 @@
 "use strict";
+
 // module to control the Tools options (click to edit, to re-geenerate, tp add)
 
 toolsContent.addEventListener("click", function (event) {
@@ -138,7 +139,7 @@ function recalculatePopulation() {
 }
 
 function regenerateStates() {
-  BurgsAndStates.regenerateStates();
+  recreateStates();
   BurgsAndStates.expandStates();
   BurgsAndStates.normalizeStates();
   BurgsAndStates.collectStatistics();
@@ -160,6 +161,137 @@ function regenerateStates() {
   if (document.getElementById("militaryOverviewRefresh")?.offsetParent) militaryOverviewRefresh.click();
 }
 
+function recreateStates() {
+  const localSeed = generateSeed();
+  Math.random = aleaPRNG(localSeed);
+
+  const statesCount = +regionsOutput.value;
+  const validBurgs = pack.burgs.filter(b => b.i && !b.removed);
+  if (!validBurgs.length)
+    return tip("There are no any burgs to generate states. Please create burgs first", false, "error");
+  if (validBurgs.length < statesCount)
+    tip(
+      `Not enough burgs to generate ${statesCount} states. Will generate only ${validBurgs.length} states`,
+      false,
+      "warn"
+    );
+
+  const lockedStates = pack.states.filter(s => s.i && !s.removed && s.lock);
+  const lockedStatesIds = lockedStates.map(s => s.i);
+  const lockedStatesCapitals = lockedStates.map(s => s.capital);
+
+  // turn all old capitals into towns, except for the capitals of locked states
+  for (const burg of validBurgs) {
+    if (!burg.capital) continue;
+    if (lockedStatesCapitals.includes(burg.i)) continue;
+
+    moveBurgToGroup(burg.i, "towns");
+    burg.capital = 0;
+  }
+
+  // remove emblems
+  document.querySelectorAll("[id^=stateCOA]").forEach(el => el.remove());
+  document.querySelectorAll("[id^=provinceCOA]").forEach(el => el.remove());
+  emblems.selectAll("use").remove();
+
+  unfog();
+
+  if (!statesCount) {
+    tip(`Cannot generate zero states. Please check the <i>States Number</i> option`, false, "warn");
+    pack.states = pack.states.slice(0, 1); // remove all except of neutrals
+    pack.states[0].diplomacy = []; // clear diplomacy
+    pack.provinces = [0]; // remove all provinces
+    pack.cells.state = new Uint16Array(pack.cells.i.length); // reset cells data
+
+    borders.selectAll("path").remove(); // remove borders
+    regions.selectAll("path").remove(); // remove states fill
+    labels.select("#states").selectAll("text"); // remove state labels
+    defs.select("#textPaths").selectAll("path[id*='stateLabel']").remove(); // remove state labels paths
+
+    if (document.getElementById("burgsOverviewRefresh").offsetParent) burgsOverviewRefresh.click();
+    if (document.getElementById("statesEditorRefresh").offsetParent) statesEditorRefresh.click();
+    return;
+  }
+
+  // burg local ids sorted by a bit randomized population. Also ignore burgs of a locked state
+  const sortedBurgs = validBurgs
+    .filter(b => !lockedStatesIds.includes(b.state))
+    .map(b => [b, b.population * Math.random()])
+    .sort((a, b) => b[1] - a[1])
+    .map(b => b[0]);
+
+  const count = Math.min(statesCount, validBurgs.length) + 1; // +1 for neutral
+  let spacing = (graphWidth + graphHeight) / 2 / count; // min distance between capitals
+
+  const capitalsTree = d3.quadtree();
+  const isTooClose = (x, y, spacing) => Boolean(capitalsTree.find(x, y, spacing));
+
+  const newStates = [{i: 0, name: pack.states[0].name}];
+
+  // restore locked states
+  lockedStates.forEach(s => {
+    const newId = newStates.length;
+
+    s.provinces.forEach(id => {
+      if (!pack.provinces[id] || !pack.provinces[id].removed) return;
+      pack.provinces[id].state = newId;
+      // pack.provinces[id].should_restore = true;
+    });
+
+    for (const i of pack.cells.i) {
+      const stateId = pack.cells.state[i];
+      if (stateId === s.i) pack.cells.state[i] = newId;
+    }
+
+    const {x, y} = validBurgs[s.capital];
+    capitalsTree.add([x, y]);
+
+    s.i = newId;
+    newStates.push(s);
+  });
+
+  for (let i = newStates.length; i < count; i++) {
+    let capital = null;
+
+    for (const burg of sortedBurgs) {
+      const {x, y} = burg;
+      if (!isTooClose(x, y, spacing)) {
+        burg.capital = 1;
+        capital = burg;
+        capitalsTree.add([x, y]);
+        moveBurgToGroup(burg.i, "cities");
+        break;
+      }
+
+      spacing = Math.max(spacing - 1, 1);
+    }
+
+    // all burgs are too close, should not happen in normal conditions
+    if (!capital) break;
+
+    // create new state
+    const culture = capital.culture;
+    const basename =
+      capital.name.length < 9 && capital.cell % 5 === 0 ? capital.name : Names.getCulture(culture, 3, 6, "", 0);
+    const name = Names.getState(basename, culture);
+    const nomadic = [1, 2, 3, 4].includes(pack.cells.biome[capital.cell]);
+    const type = nomadic
+      ? "Nomadic"
+      : pack.cultures[culture].type === "Nomadic"
+      ? "Generic"
+      : pack.cultures[culture].type;
+    const expansionism = rn(Math.random() * powerInput.value + 1, 1);
+
+    const cultureType = pack.cultures[culture].type;
+    const coa = COA.generate(capital.coa, 0.3, null, cultureType);
+    coa.shield = capital.coa.shield;
+
+    newStates.push({i, name, type, capital: capital.i, center: capital.cell, culture, expansionism, coa});
+  }
+
+  pack.states = newStates;
+}
+
 function regenerateProvinces() {
   unfog();