Originally Posted by
robbbbb
Make sure your VS number is on the boarding pass, such that even if FB somehow credited the miles, you could have them removed and credit to VS again.
This is not possible.
This is why it is very important NOT to associate a "wrong" number with your reservation at any time. You should strive to avoid putting yourself in a situation where you "need" to change the number.
https://wwws.airfrance.fr/en/informa...cg-flying-blue