Can customers “undo” change sets?
There are various levels of undo. In UCM 1, you can decide not to deliver a change During delivery, and before checking into the integration stream, you can cancel a delivery. Once a change has been incorporated into a baseline, it cannot be removed via UCM in the first release. However, you can create a new activity called “Remove change set X”, and use subtractive merge to create new versions that can remove the old versions. You would then deliver/baseline this change.