AI planes cfg edit

Is there anyway to remove AI aircraft from the list of aircraft in the 'Create A Flight' screen by editing the .cfg file anyway?

Also, is it possible to rename the following lines to organise all the AI into one group:

ui_manufacturer=
ui_type=
ui_variation=

(with out destroying AI flight plans) ❓

Do the AI traffic files read the lines above or the 'title=' line of the cfg to assign aircraft with specific routes?

Cheers