Is there a prohibition on the company taking a trip from one base, adding deadheads on both sides and moving it to another base? I know I've seen this before and the trip has a note that says “for reserve only”.

Was hoping to pickup the rare GSWC for 3 trips that were in open time last night. I looked this morning and they had all disappeared. Found them in the ATL trip coverage built with deadheads on front and back end and awarded as green slips to regular pilots.

I couldn’t find anything in the PWA but I’m not sure where to look.