Yeah, very unintuitive. Probably not going to be easy to remember either since it will probably be a blue moon before I need to do it again.
That said, it should be very simple to port over the current list of FAQs as of the date that the forum was ported, which would solve the most pressing problem, missing FAQs.
The longer they wait to do it, the less viable it becomes.
First, the most current list will eventually get deleted and second, someone might write a new FAQ which would get overwritten by a new porting.
One positive thing about porting a FAQ list over that was 5 years old is that I did find one useful FAQ (to me) from a member which was banned a few years ago. When he was banned his FAQs also disappeared. Needless to say, I have saved a copy of that FAQ before it goes missing again.
Hopefully, when it comes time to port the Engineering forums that they will do a better smoother porting.