Basil,
Is this the modified select items screen you are working with, or is this the out of box product? It could be a bug in the edit buttons action. I don't have a system set up unfortunately to test it for you. That button is an "edit all" button. It will loop over all the confirmation items that were added from this screen and edit them one after the other. Clicking finish should move on the the next item until they have all been edited. If you have modified anything, there is no way for me to know what you have done wrong. This button logic should not have changed between 4.1 and 4.2.
Jason Latko - Senior Product Developer at SAP