Is there a way, without doing a new setup, to reset all the optimizer and trim settings. I'm referring to to numbers set by optimizer and trim flights.
of course, you can dial in the trim flight values manually, and also the optimizer values. For the swash plate, half of the agility is default, so as a trick you can change agility by one click back and forth for the bank in question or each bank to reset the optimizer to default.
For the tail optmizer 30-30 are default if you want to dial those back.
unfortunately but intentionally, yes. But if you know the offset you get, you can just dial it in again manually after a change of agility.
Just add the offset again (like +5 for example in bank 1, +7 in bank two, what you had as an offset before, and it's good enough). Run the optimizer again to fully optimize if you feel it's not perfect.