Ensure that records, reviously removed in the column pipe, are again removed from the final flat data.

Author: MKirova

projects/igniteui-angular/src/lib/data-operations/pivot-strategy.ts

@@ -110,7 +110,14 @@ export class PivotColumnDimensionsStrategy implements IPivotDimensionStrategy {
                     if (k.indexOf(pivotKeys.records) !== -1) {
                         if (hierarchy[k] && hierarchy[k].length > 0 && k !== pivotKeys.records) {
                             const unprocessed = hierarchy[k].filter(r => !r.processed);
-                            this.processHierarchy(unprocessed, columns, values, pivotKeys);
+                            const res = this.processHierarchy(unprocessed, columns, values, pivotKeys);
+                            if (res.length !== unprocessed.length) {
+                                // some records should be removed from the final flat collection
+                                // since this is no longer the final pipe just mark it for removal.
+                                unprocessed.forEach(element => {
+                                    element.remove = true;
+                                });
+                            }
                         }
                         //delete hierarchy[k];
                     }

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-grid.pipes.ts

@@ -68,8 +68,9 @@ export class IgxPivotRowExpansionPipe implements PipeTransform {
             PivotUtil.flattenHierarchy(data, config, row, expansionStates, pivotKeys, totalLlv, prevDims, 0);
             prevDims.push(row);
         }
-        this.cleanState(data, pivotKeys);
-        return data;
+        const finalData = data.filter(x => !x.remove);
+        this.cleanState(finalData, pivotKeys);
+        return finalData;
     }
 
     private cleanState(data, pivotKeys) {

src/app/pivot-grid/pivot-grid.sample.ts

@@ -71,6 +71,10 @@ export class PivotGridSampleComponent {
                     memberName: 'ProductCategory',
                     enabled: true
                 }
+            },
+            {
+                memberName: 'SellerName',
+                enabled: true
             }
         ],
         values: [