are your parents active on your pass privs? I'm not sure but I believe that changes their status (it used to be a difference in their fees. priority) sift thru the travelnet stuff and see what the scoop is now--there are 2 types of companion passes--"non-spouse" and the travel companion (kinda like non-dependent child)
Hopefully, someone else here is mroe familiar since the merger rules have changed from the junk I used to know!