Originally Posted by
angatol
Instead of checking the bag in for LHR-AMS-LHR-DXB, try checking it in at LHR for the LHR-DXB flight before you've flown LHR-AMS. Someone has reported success at this:
http://www.flyertalk.com/forum/19599709-post5.html
Except they're starting at LGW and coming back through LHR.