You would want to use Save without Validation if there were errors on the page, but you did not want to undo *everything* you've done in the transaction. One use case: Let's say you get an error that an FAU you are trying to redistribute to is invalid. If the issue is that the FAU is valid, but just hasn't been activated in BFS, you could save with the currently invalid FAU in your transaction, get the FAU activated in BFS, and then come back to complete the transaction.