Sometimes yes, sometimes no. I've book on Air France twice in past year and once they got my account and once I had to call to get it added properly. On that trip, I also had to fax in my boarding passes to get credit for a couple of the segments of my flight (also not uncommon - always save boarding passes)

[ETA - ah, status, not skymiles number, which is what I had issues with. As reported above, I've heard it both ways - sometimes depending on where you print the boarding pass eg at home, at kiosk, at counter....]

I'm gold now, flying PV on AF in November, so I'm happy about the lounge access. I've read of inconsistencies with AF lounge access (it's always at their discretion, no matter your Delta/ST status, so....)

Good luck!