You don't need to re-record the whole transaction. You can edit text (like passwords) by opening the recording and then enter "Play action-by-action" mode (third button) and then you can click the three dots to the right of any action and select "Edit" (screen shots below). On your other ask for the ability to ignore certificate errors, we are currently working on that and other things related to certificates. We still ship and fully support the old recorder for this reason and some others where the new recorder is not yet at full feature parity.
