Originally Posted by Vangrovsky

Thanks!

A nice UA agent combined my two separate UA tickets (one UA int'l paid ticket and one UA domestic award ticket) into one continuous journey in order to check my bag all the way. It wasn't really necessary, since I would have to clear my bag at US immigration/customs and check the bag with UA again.

However, the end result was that I was no longer able to make changes to the original domestic UA award ticket.(from connecting flights to nonstop flight, which opened up before I was about to board the UA int'l flight)