I have 2 list view’s and both have 3 fields

LvInv1 and lvAll2

First field is ID, second field is Qty, and third is a date.

What happens is lvInv1 Qty is taken out of and moved into lvAll2 listview. So the Qty In lvInv1 goes down and Qty in lvAll2 goes up.

So when I remove a single row in LvAll2, whats supposed to happen is, the qty from lvall2 is remove and the qty lvinv1 should be updated (lv1 +lv2) now all this depends on which ID is picked.

I have looked over a few listview tutorials but none seem to work.

Any help would be appreciated.
Thank you