diff --git a/packages/basic.gblib/services/KeywordsExpressions.ts b/packages/basic.gblib/services/KeywordsExpressions.ts
index 386fa36d..9e816dda 100644
--- a/packages/basic.gblib/services/KeywordsExpressions.ts
+++ b/packages/basic.gblib/services/KeywordsExpressions.ts
@@ -1176,6 +1176,7 @@ export class KeywordsExpressions {
       /^\s*MERGE\s*(.*)\s*WITH\s*(.*)BY\s*(.*)/gim,
       ($0, $1, $2, $3) => {
         return `__reportMerge1 = await sys.merge({pid: pid, file: ${$1}, data: ${$2}, key1: ${$3}})
+        ${$2} = null;
         __reportMerge.adds += __reportMerge1.adds;
         __reportMerge.updates += __reportMerge1.updates;
         __reportMerge.skipped += __reportMerge1.skipped;
@@ -1297,6 +1298,7 @@ export class KeywordsExpressions {
         }else{
           await sys.saveToStorage({pid: pid, table: ${table}, fieldsValues: [${fieldsAsText}], fieldsNames: [${fieldsNames}] })
         }
+        ${table} = null;
       `;
       }
     ];