Due to the recent strike at FRA, I was re-routed through LHR to get to GVA. The LHR-GVA segement was on BA.
After I got back home, Called UA and recieved the proper credit for all the miles including bonus miles.
I'm not affiliated with BA FF program. But If I was, I should be able to get "Double Dip" credit for LHR-GVA portion.
AndrewM