Originally Posted by Cory6188

For a standard-issue domestic ticket , if you used the website, this doesn't typically happen, but if there was anything more complicated about your itinerary (codeshare segment, upgraded flight, eCredit applied, etc.), then it can cause the underlying ticket to get "hung up" in the system and not get reissued properly. Also, with the large number of new res agents that DL has hired, sometimes they make mistakes when changing things - so you have to keep a close eye on it there, too.

Even though it shouldn't be on the pax to keep track, I always take a look at the ticket receipt itself after I make a change to ensure everything went through correctly. As you mentioned, another clue is if you don't receive an e-mail receipt from DL with the correct, updated information.