I booked two one way tickets. The first:
LGA-IAD-JNB
The second:
JNB-FRA-LHR-JNB
I did it that way because I wanted the stop in LHR on the return, and it wasn't giving me those flights when I tried to book it all as one return flight.
Now I want to change it to stop in LHR on the way to JNB instead of the way back. Phone rep says the reservations can't be combined into one return flight to make the change, and as a one way I can't book EWR-LHR-FRA-JNB at the same rate. Should I HUCA, or is she correct?