Puzzles while trying to use a patch file

I am trying to use a patch file to control my Yamaha TG55. The patch names don’t appear in the Patch Selector I just get names Pgm-1 to Pgm-128. Also I cannot figure out how to move or remove a patch change event in a MIDI track. The mouse wheel does change the patch number but right-clicks don’t have any effect at all. I am using version 6.3 on OpenSuse 15.0

TIA

Graham Dicker