[GNC] Turn off automatically saving changed transaction

[Keith Lewis]

Previously, if I edited a transaction and then clicked in another transaction, GNUCash would ask if I wanted to save the changed transaction. It also had a button/checkbox for don't ask again, which I must have selected because now it doesn't ask, it just saves it. How do I go back to the original behavior? I looked in Edit>Preferences and searched the manual and FAQ and Googled it, but I can't find the answer.
Thanks,
Keith