As you can see, both Drampa and Beldum are registered. The Dynamax, shiny, and lucky versions are all registered for both. I also have the XXS registered for both, but not the XXL. This leads me to believe one of two things: 1) this is just another bug with the remote trade feature, or, 2) my friend is offering XXL Beldum and XXL Drampa.
by water_fountain_