DME - change arriving flight #

[BlueFairy]

Hi,

So I'm printing all of my confirmations for my trip in 17 days. I just compared my DME confirmation on which I listed a 2 digit flight number for arrival. Comparing it to my SWA flight confirmation #, which now lists a 4 digit number. My outbound flights are the same. I have an old confirmation from SWA with the numbers matching what DME says. So SWA has basically changed the flight number but my itinerary is identical.

Is it necessary to advice DME of the change?

 

[ncc1701]

Not for an arrival. Just show up with your Magic Bands or confirmation of your resort stay if you don't have the bands