Pretty much as noted in the subject. I know we can export from HLC to FGC.
Not being able to do so with HLO and FGU means it is hard to argue with players who don't see a good reason to grab and maintain a HLO account. Especially since they can see all of the stuff I have in FGU.
I prefer - and they prefer - being able to use HeroLab. You are more up-to-date with products (we are a Pathfinder 1 & 2 group) but having to completely re-create the character everytime there is a change makes HLO a very hard sell for me as the GM.
My suggestion with context.
All the best