Undoing Into a Session

If semantic errors result from undoing a session activation, you are prevented from doing the undo. However there is an alternative in this case. You can undo the session activation and have the changes put into a new session. You can then fix the semantic errors and activate the session. You can also use this capability of undoing into a session to explore the ramifications of a session activation undo. You can examine all the changes that result, and decide if you really want to do the undo. If you decide that you really want to, you can activate the session.