When originally issued, my DONE4 had a segment RIC-LAX, and thus I have a coupon in my ticket book for it.

When AA cancelled that flight, they automatically rerouted me RIC-DFW-LAX. When I noticed (online) and called the AA RTW desk they told me they had documented it all in the PNR.

So I will be checking in at RIC on Wednesday and have one coupon for what will be two flights. With paper tickets, AA always staple the coupon to the back of the BP and the BP has "Valid only with Coupon" printed on the face of it. So what will they do in this case as there is only one coupon and 2 BPs?

Am I going to have problems checking in? Should I be doing something to mitigate problems at check in?