What kind of action is selling cargo and contraband to a solid contact?
Turns out we ruled correctly.


  Deal Actions
  
  If your Firefly is in a Contact’s Sector,
  you may Deal with that Contact. You
  may look at 3 and accept up to 2 Jobs
  from their Contact Deck.
  
  If you are Solid with that Contact, you
  may also sell Cargo and Contraband
  to them as part of your Deal Action.
  (see rules for Reputation on pg 15 for
  details on getting Solid with Contacts).