Hello and welcome to FT!
Unfortunately as the points have already posted to the US account it cannot be reverted. FF number must be correct before travel.
You could of course ask both US and BAEC for a manual fix, but that is very far fetched.
moderator note:
Also, your post was invisible due to the FT spam filter catching you as a first time poster. This is automatic to prevent a flood of spam on here. Sometimes the innocents get caught too. Apologies
