Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: IB+ Gold, TK E+, Hyatt Globalist, Marriott LTP, IHG Diamond
Posts: 14,182
If you stop quoting your IB+ number you'll be fine. Airlines don't make any effort to credit points to frequent flyer accounts if you don't provide a FF number.
As others have suggested, if you've already used it on a booking, then what you need is to remove it from the booking.