Merge pull request MicrosoftDocs#2961 from daryllabar/patch-1

Clearly Define When Alternate Key Values are Copied

Author: Nkrb

powerapps-docs/developer/data-platform/use-upsert-insert-update-record.md

@@ -55,7 +55,7 @@ You can reduce the complexity involved with data integration scenarios by using
 
 4. If the record doesn’t exist:  
 
-   1.  Copy any alternate key values into the target table columns.  
+   1.  Copy any alternate key values that the target does not already have in its attributes collection, into the target table columns.  
 
    2.  Call `Create`.  
 
@@ -134,4 +134,4 @@ public void ProcessUpsert(String Filename)
  [Using alternate keys](use-alternate-key-create-record.md)
 
 
-[!INCLUDE[footer-include](../../includes/footer-banner.md)]
+[!INCLUDE[footer-include](../../includes/footer-banner.md)]