Originally Posted by vinnyc

What scares me is that on Delta’s website, my reservation still shows 23A as the requested seat. Is there a risk that, as the master PNR and the son PNR have to communicate to each other to update information, nothing is going to be screwed up and that I will end up with no 22A nor 23A confirmed at all?

If someone was familiar with the GDS/CRS, master PNR and copies of PNR, I would be happy to have some answer…