The problem with that is if an FC bid on a house in order to relocate their FC house and transferred and they roll back, do they get their original house back? What if they then lose the re-bid if they aren't able to get the original house back?

Sounds like a huge can of worms to open up for lots that didn't land on 0.

Sometimes the best thing to do is to just fix the bug and make sure it doesn't happen again.

And I'd say that this is one of those situations due to the fact that FC's could have moved house.