diff --git a/lib/DataHarmonizer.js b/lib/DataHarmonizer.js
index 16983297..83ce47ec 100644
--- a/lib/DataHarmonizer.js
+++ b/lib/DataHarmonizer.js
@@ -551,13 +551,11 @@ class DataHarmonizer {
         if (container_class) {
           let dataObjects = jsonData.Container[container_class];
           list_data = this.loadDataObjects(dataObjects);
-          this.hot.clear();
           this.hot.loadData(list_data);
         }
       } else {
         // assume tabular data if not a JSON datatype
         list_data = this.loadSpreadsheetData(contentBuffer.binary);
-        this.hot.clear();
         this.hot.loadData(list_data);
       }
       // this.hot.render(list_data);