I have this problem also. No matter what I select it’s defaulting to an old destination folder. It just won’t update. It does work it just won’t go where I want it to.
I just observed that if I drag and drop a different location that seems to work but clicking the + symbol and selecting does not. I am on Sonoma 14.7.2. Now observing that creating the AAF is hung right at the start and never progresses.
When the location is not first accepted it is generally due to a sandboxing issue, both + and drag n drop should work, but if one does not we would recommend using the other.
What version of X2Pro5 are you using ?
Has the AAF been generated or did a warning pop up ? Are you able to copy the console from when you initiated the AAF creation ?