All,

Thanks again for all the advice I have received thus far on this (and other) forum(s). I currently have the following AONE4 ticketed:

CAI-LHR-HKG-SYD-MEL-SYD-AKL-SYD-BKK//NRT-HKG-NRT-HKG-SIN//HKG-JFK-DCA-JFK-YVR-LHR-AGP-LHR-DXB

I have thus far only used the CAI-LHR segment. With hindsight, I probably do not need the SYD-MEL-SYD part of this ticket. I am considering reissuing this (either remove it altogether - most likely - or replace the HKG-SYD with HKG-MEL), but have two questions:

1) Assuming I used BA London to do this, is it a painful procedure? I have read some horror stories on here about reissuing!
2) If I do remove the SYD-MEL-SYD segments and add in one or two (paid for) extra segments for Asia, would this increase the complexity of any reissue, and hence the hassle/time in doing so?

Any comments appreciated. Thanks again for your time and help.