Hi Deepak,
Thank you for your reply. Since the data are sensitive, I changed the values in the source tables thinking that I can post for your review. BUT, (1) suprisingly, when I move the fields around in the pivot table, the old data are still there (even through I changed them in source table). SO the pivot table is NOT pulling from the source table BUT from "memories" somewhere in the set up of the relationship or power pivot. (2) NEXT, just curious....I copied the source table to an new excel book, set up the pivot table. It does not give the error, and updated just fine. So problem is definitely in the set up (relationship or power pivot) of the old excel book.
I regret that I am unable to post the file since the sensitive data are still there.
Is there another way I can provide additional information/observation?
Thank you Deepak,
Kim