Ok, I checked wiki but not to detailed from what I read.

Fate points, and unlocking the twists. Lets say I unlocked one. Does that unlock it for every tree I would switch to? For instance would it be unlocked for LD and Flowers, and any other one I made active?

Second the choices made when twisting. Do they stay there for any tree I change to? Say I slapped sense weakness in the first box. Would it be there in the same box no matter what tree (shadow, fury, LD, Unyielding) I made active?

And 3rd can you change up twists indefinitely, or you you have to reset em like the tree?