Thanks for explaining Andreas, I should have noticed the lack of attribute.
I designed my fixture profile in the online GDTF builder and there is no option to NOT assign attributes that I can find.
In MA editor I can change to EMPTY if I like .
Not sure if I understand the implications of not having an attribute vs having one.
Seems to me most profiles use individual attribute assignments.
To MA: I still think I have a valid point for always using the 'Channel function name'.