diff --git a/public/modules/ui/heightmap-editor.js b/public/modules/ui/heightmap-editor.js
index 6e76c4bb..e204055a 100644
--- a/public/modules/ui/heightmap-editor.js
+++ b/public/modules/ui/heightmap-editor.js
@@ -330,15 +330,11 @@ function editHeightmap(options) {
       c.y = p[1];
     }
 
-    // recalculate zones to grid
-    zones.selectAll("g").each(function () {
-      const zone = d3.select(this);
-      const dataCells = zone.attr("data-cells");
-      const cells = dataCells ? dataCells.split(",").map(i => +i) : [];
-      const g = cells.map(i => pack.cells.g[i]);
-      zone.attr("data-cells", g);
-      zone.selectAll("*").remove();
-    });
+    const zoneGridCellsMap = new Map();
+    for (const zone of pack.zones) {
+      if (!zone.cells || !zone.cells.length) continue;
+      zoneGridCellsMap.set(zone.i, zone.cells.map(i => pack.cells.g[i]));
+    }
 
     Features.markupGrid();
     if (erosionAllowed) addLakesInDeepDepressions();
@@ -448,24 +444,18 @@ function editHeightmap(options) {
       Lakes.defineNames();
     }
 
-    // restore zones from grid
-    zones.selectAll("g").each(function () {
-      const zone = d3.select(this);
-      const g = zone.attr("data-cells");
-      const gCells = g ? g.split(",").map(i => +i) : [];
-      const cells = pack.cells.i.filter(i => gCells.includes(pack.cells.g[i]));
+    const gridToPackMap = new Map();
+    for (const i of pack.cells.i) {
+      const g = pack.cells.g[i];
+      if (!gridToPackMap.has(g)) gridToPackMap.set(g, []);
+      gridToPackMap.get(g).push(i);
+    }
 
-      zone.attr("data-cells", cells);
-      zone.selectAll("*").remove();
-      const base = zone.attr("id") + "_"; // id generic part
-      zone
-        .selectAll("*")
-        .data(cells)
-        .enter()
-        .append("polygon")
-        .attr("points", d => getPackPolygon(d))
-        .attr("id", d => base + d);
-    });
+    for (const zone of pack.zones) {
+      const gridCells = zoneGridCellsMap.get(zone.i);
+      if (!gridCells || !gridCells.length) continue;
+      zone.cells = gridCells.flatMap(g => gridToPackMap.get(g) || []);
+    }
 
     // recalculate ice
     Ice.generate();
diff --git a/public/versioning.js b/public/versioning.js
index fd2a67a2..056b30e2 100644
--- a/public/versioning.js
+++ b/public/versioning.js
@@ -13,7 +13,7 @@
  * Example: 1.102.2 -> Major version 1, Minor version 102, Patch version 2
  */
 
-const VERSION = "1.112.1";
+const VERSION = "1.112.2";
 if (parseMapVersion(VERSION) !== VERSION) alert("versioning.js: Invalid format or parsing function");
 
 {
diff --git a/src/index.html b/src/index.html
index 668803de..ca605c87 100644
--- a/src/index.html
+++ b/src/index.html
@@ -8511,7 +8511,7 @@
     <script defer src="modules/ui/editors.js?v=1.112.1"></script>
     <script defer src="modules/ui/tools.js?v=1.111.0"></script>
     <script defer src="modules/ui/world-configurator.js?v=1.105.4"></script>
-    <script defer src="modules/ui/heightmap-editor.js?v=1.105.2"></script>
+    <script defer src="modules/ui/heightmap-editor.js?v=1.112.2"></script>
     <script defer src="modules/ui/provinces-editor.js?v=1.108.1"></script>
     <script defer src="modules/ui/biomes-editor.js?v=1.112.0"></script>
     <script defer src="modules/ui/namesbase-editor.js?v=1.105.11"></script>