diff --git a/packages/datalib/src/GridDisplay.ts b/packages/datalib/src/GridDisplay.ts
index 4f184318..2fa08279 100644
--- a/packages/datalib/src/GridDisplay.ts
+++ b/packages/datalib/src/GridDisplay.ts
@@ -157,7 +157,7 @@ export abstract class GridDisplay {
   }
 
   get hiddenColumnIndexes() {
-    return (this.config.hiddenColumns || []).map(x => _.findIndex(this.columns, y => y.uniqueName == x));
+    return (this.config.hiddenColumns || []).map(x => _.findIndex(this.allColumns, y => y.uniqueName == x));
   }
 
   isColumnChecked(column: DisplayColumn) {
diff --git a/packages/web/src/datagrid/DataGridCore.svelte b/packages/web/src/datagrid/DataGridCore.svelte
index 6cbec73c..592607ba 100644
--- a/packages/web/src/datagrid/DataGridCore.svelte
+++ b/packages/web/src/datagrid/DataGridCore.svelte
@@ -697,6 +697,10 @@
   // $: console.log('rowHeight', rowHeight);
   // $: console.log('containerHeight', containerHeight);
 
+  // $: console.log('COLUMNS', columns);
+  // $: console.log('realColumnUniqueNames', realColumnUniqueNames);
+  // $: console.log('columnSizes.realCount', columnSizes.realCount);
+
   $: realColumnUniqueNames = _.range(columnSizes.realCount).map(
     realIndex => (columns[columnSizes.realToModel(realIndex)] || {}).uniqueName
   );
@@ -1317,7 +1321,10 @@
   <ErrorInfo message={errorMessage} alignTop />
 {:else if isDynamicStructure && isLoadedAll && grider?.rowCount == 0}
   <div>
-    <ErrorInfo alignTop message="No rows loaded, check filter or add new documents. You could copy documents from ohter collections/tables with Copy advanved/Copy as JSON command." />
+    <ErrorInfo
+      alignTop
+      message="No rows loaded, check filter or add new documents. You could copy documents from ohter collections/tables with Copy advanved/Copy as JSON command."
+    />
     {#if display.filterCount > 0}
       <FormStyledButton value="Reset filter" on:click={() => display.clearFilters()} />
     {/if}
diff --git a/packages/web/src/datagrid/SeriesSizes.ts b/packages/web/src/datagrid/SeriesSizes.ts
index f221a4c5..483d5c50 100644
--- a/packages/web/src/datagrid/SeriesSizes.ts
+++ b/packages/web/src/datagrid/SeriesSizes.ts
@@ -22,6 +22,7 @@ export class SeriesSizes {
   private scrollItems: SeriesSizeItem[] = [];
   private positions: number[] = [];
   private scrollIndexes: number[] = [];
+  private modelIndexes: number[] = [];
   private frozenItems: SeriesSizeItem[] = [];
 
   public get scrollCount(): number {
@@ -96,6 +97,11 @@ export class SeriesSizes {
       this.frozenItems.push(item);
       lastpos += size;
     }
+
+    this.modelIndexes = _.range(0, this.count);
+    if (this.hiddenAndFrozenModelIndexes) {
+      this.modelIndexes = this.modelIndexes.filter(col => !this.hiddenAndFrozenModelIndexes.includes(col));
+    }
   }
 
   public getScrollIndexOnPosition(position: number): number {
@@ -303,27 +309,32 @@ export class SeriesSizes {
     this.buildIndex();
   }
   public realToModel(realIndex: number): number {
-    if (this.hiddenAndFrozenModelIndexes == null && this.frozenModelIndexes == null) return realIndex;
-    if (realIndex < 0) return -1;
-    if (realIndex < this.frozenCount && this.frozenModelIndexes != null) return this.frozenModelIndexes[realIndex];
-    if (this.hiddenAndFrozenModelIndexes == null) return realIndex;
-    realIndex -= this.frozenCount;
-    for (let hidItem of this.hiddenAndFrozenModelIndexes) {
-      if (realIndex < hidItem) return realIndex;
-      realIndex++;
-    }
-    return realIndex;
+    return this.modelIndexes[realIndex] ?? -1;
+    // console.log('realToModel', realIndex);
+    // if (this.hiddenAndFrozenModelIndexes == null && this.frozenModelIndexes == null) return realIndex;
+    // if (realIndex < 0) return -1;
+    // if (realIndex < this.frozenCount && this.frozenModelIndexes != null) return this.frozenModelIndexes[realIndex];
+    // if (this.hiddenAndFrozenModelIndexes == null) return realIndex;
+    // realIndex -= this.frozenCount;
+    // console.log('this.hiddenAndFrozenModelIndexes', this.hiddenAndFrozenModelIndexes);
+    // for (let hidItem of this.hiddenAndFrozenModelIndexes) {
+    //   if (realIndex < hidItem) return realIndex;
+    //   realIndex++;
+    // }
+    // console.log('realToModel RESP', realIndex);
+    // return realIndex;
   }
   public modelToReal(modelIndex: number): number {
-    if (this.hiddenAndFrozenModelIndexes == null && this.frozenModelIndexes == null) return modelIndex;
-    if (modelIndex < 0) return -1;
-    let frozenIndex: number = this.frozenModelIndexes != null ? _.indexOf(this.frozenModelIndexes, modelIndex) : -1;
-    if (frozenIndex >= 0) return frozenIndex;
-    if (this.hiddenAndFrozenModelIndexes == null) return modelIndex;
-    let hiddenIndex: number = _.sortedIndex(this.hiddenAndFrozenModelIndexes, modelIndex);
-    if (this.hiddenAndFrozenModelIndexes[hiddenIndex] == modelIndex) return -1;
-    if (hiddenIndex >= 0) return modelIndex - hiddenIndex + this.frozenCount;
-    return modelIndex;
+    return this.modelIndexes.indexOf(modelIndex);
+    // if (this.hiddenAndFrozenModelIndexes == null && this.frozenModelIndexes == null) return modelIndex;
+    // if (modelIndex < 0) return -1;
+    // let frozenIndex: number = this.frozenModelIndexes != null ? _.indexOf(this.frozenModelIndexes, modelIndex) : -1;
+    // if (frozenIndex >= 0) return frozenIndex;
+    // if (this.hiddenAndFrozenModelIndexes == null) return modelIndex;
+    // let hiddenIndex: number = _.sortedIndex(this.hiddenAndFrozenModelIndexes, modelIndex);
+    // if (this.hiddenAndFrozenModelIndexes[hiddenIndex] == modelIndex) return -1;
+    // if (hiddenIndex >= 0) return modelIndex - hiddenIndex + this.frozenCount;
+    // return modelIndex;
   }
   public getFrozenPosition(frozenIndex: number): number {
     return this.frozenItems[frozenIndex].position;