I'm curious whether the itinerary (for which QF agreed to use the new fare rules) was ticketed prior to Aug 1, 2017.

I'm also curious whether there is anything explicit in a typical xONEx fare rule that specifies that future rule clarifications/changes must be ignored or refused at the time of any future ticket reissue(s).

I have an xONEx ticket purchased last year (before Dec. 1), with the first flight next month, and I'm wondering whether rule changes that have occurred since purchase will be permitted or refused when, after the first flight, I submit requests for routing changes. The two that most impact me are 1. the then-existing limitation on U.K - Middle East flights (NOT MORE THAN 2 OF WHICH MAY BE BETWEEN THE UK AND ALBANIA/ALGERIA/BULGARIA/CROATIA/CYPRUS/GREECE/LIBYA/ISRAEL/MIDDLE EAST/MOROCCO/ROMANIA/RUSSIA WEST OF THE URALS/TUNISIA/TURKEY/UKRAINE); and 2. the ability to take a stopover in N. America, then visit S. America, and then return to N. America with a stopover (and not just a transit). I know that historically there were some limitations on applying newer rules to these tickets, but I'm wondering whether that was a contractual issue or more a tradition followed by certain telephone CS agents (i.e. perhaps overcome today by HUACA).

Insights very much appreciated.