Booking disassociated from FC number

Logged on to check my seat on the VS301 on 10/10 and the website said my booking was not associated with my Flying club number even though my original booking shows the miles tier points and my FC details. Any idea why?

Looks like there has been an a/c change (A346 to A343)

Could this explain it?

An Aircraft change would not explain it. Maybe just a bug after the mini upgrade. Check again in a couple of days and if still not right give FC a ring even if only to put your mind at rest.

Same thing happened to me tonight actually.

I checked in online a couple of hours ago for my flight to LHR tomorrow, and it said my FC # wasn't associated with my booking. I filled in my number manually on the main check in screen, but just thought it weird that it had originally shown up on me e-ticket, and I had booked online, through the VS website, while I was logged on to my FC account. Maybe just a bug in the system?

On my last flight my booking was not showing after logging on to FC. This was apparently due to it being a miles upgrade, which do not show.