I am unfortunately coming to the end of a fantastic ex-STO DONE4. The last part is BKK-xLHR-STO. I want to stay in London for a while and take the flight to Stockholm later (if at all). When I attempt to move the fight to LHR and NOT the following flight to STO will anything be triggered in the system?? I am ticketed with QF who don't really seem as hot on the rules as AA.