How can I handle change requests to already finished user-stories?
Let's say there is a user story which describes how the user wants to list entities. The story describes further:
- which information of the entities should be shown (as columns).
- under which conditions entities should be highlighted (background color)
- some filters
After estimating the effort based on story points, it has been implemented, accepted and shipped to the customer.
After working some time, the customer wants to replace the highlighting of entities with an expandable/collapsible grouping.
Cause the development team is payed according to accepted user stories, changing the existing story (already payed) would make it hard to calculate the payment.
Handling the requested changes separately on the other hand would make the existing story obsolete.
So can you give me some advice on how to handle this situation?