Import scenario Change Order commitments

I have import scenario for change orders commitments, but I can’t find a way to update selected commitment.

My import scenario: Now with active checkboxes it create new change order and add to it my subcontract, but I can’t update it’s amount. May be someone know how change it for update line amount?

when i try to use not selected lines- it create new line or do nothing.

For example my result if I enable “Commitments” - it seems it can’t find this line from “Select Commitments” dialog and just create new line

How I can select and update amount for the line from  “Select Commitments” dialog and not create new line?