If you read Smug's dialogues in Conversation Editor for the 4th mission, you see he promised you a third of cost for each piece of his goods. To get the discount, you need to edit M_04_Mission04.con, in Smug's dialogues for M04MeetSmuggler, you should change all flags "FordSchickRescued" to "SchickThankedPlayer".
This bug isn't fixed in Confix (at least judjing by Confix's own changelog).
If you read Smug's dialogues in Conversation Editor for the 4th mission, you see he promised you a third of cost for each piece of his goods. To get the discount, you need to edit M_04_Mission04.con, in Smug's dialogues for M04MeetSmuggler, you should change all flags "FordSchickRescued" to "SchickThankedPlayer".
This bug isn't fixed in Confix (at least judjing by Confix's own changelog).