ACP2E-1609: Region Field is not getting blank after selecting any region for a country

Author: Adiglo70550

app/code/Magento/Customer/view/adminhtml/web/js/form/element/region.js

@@ -21,10 +21,16 @@ define([
         setDifferedFromDefault: function (value) {
             this._super();
 
-            let label = parseFloat(value) ? this.indexedOptions[value].label : '';
-
-            this.source.set(this.regionScope,label);
+            const indexedOptionsArray = Object.values(this.indexedOptions),
+                countryId = this.source.data.country_id,
+                hasRegionList = indexedOptionsArray.some(option => option.country_id === countryId);
 
+            this.source.set(
+                this.regionScope,
+                hasRegionList
+                    ? parseFloat(value) ? this.indexedOptions?.[value]?.label || '' : ''
+                    : this.source.data?.region || ''
+            );
         }
     });
 });