Greg,
In my case, I want to roll everything back but Windchill won't let me. It seems to come down to this...I want to delete the latest iteration of the family table generic and the latest iteration all of the instances. However, one instance has only one iteration and Windchill won't delete it because "it's the only remaining iteration". I want the option to say "I know it is, delete it anyway". I've tried using "delete all iterations" on just this one instance first but then Windchill says I can't because I also need to delete the latest iterations of the other instances and generic. Lastly, Windchill won't let me select both "delete all iterations" for the one instance and "delete latest iteration" for the rest at the same time. It tells me what I need to do, which is what I want to do, but then won't let me do it!