Originally Posted by JohnAx
Off my original topic, are re-issues of electronic xONEx's an absolute waltz in the park, or do the airlines agonize over them just as much as over paper? ... A few months ago there was a thread here about the perils of e-ONE's in that there was quite a serious problem with one airline's computer not knowing you'd flown the previous segment, so what the heck were you doing trying to check in *here* (or something like that???).
The major peril is the e-ticket not existing at time of checkin. This is easily solved if you have your ticket number (not just PNR locator) with you. This happens about 1% of the time to me (and each time it was easily found with the ticket number). Re-issue with a different airline for e-ticket can be problematic, but reissue with the same airline is much easier than for paper tickets. However e-tickets have 16 segment limit on most systems (maybe all). The problem you allude to is unlikely to occur, as on e-tickets the airlines generally cannot see all of the preceding segments and it simply isn't an issue (what can happen is missed flights result in cancelling subsequent segments, but that has nothing to do with being an e-ticket).