2d Plan Selection

Currently using 4.6.1219 with 19.Sep.2021 fixture library. Working in the 2d plan I have added some Chauvet R2 washes (33 channel mode). I’m trying to use the selection option to select “Master and Parts” using the Rectangle option but all it gives me is the parts (Color). I can select “Master only” and get the Master attributes and I can select ”Parts only” and get Color (R G B W).
I presumed if I selected “Master and Parts” I should get both the Master and Parts attributes. All I get is Color. I have tried this with a few multi cell fixtures and I seem to get the same result (Robe Robin 100 LED Beam). Not sure what the point of Master and Parts is if it only gives me the parts (Color) ??