Hi there. Not sure if this is known, but it seems that B9 parts generates no value (fund) when recovered?
Just tested with a clean game (with Breaking Ground if that matters) with only B9 Procedural WIngs and B9 Part Switch, and I cannot recover fund from B9 parts.
Steps to reproduce:
Start a career game.
Make a plane with B9 parts, and note down the cost before launching
Launch the craft and immediately recover it.
The fund from recovery should be much less than the number listed in editor, even though the UI says 100% value recovered. B9 parts are not listed in the recovery list and seems lost.