I know there probably aren't too many people still playing Daggerfall out there, but I'm curious if anyone has an answer to this question.

I got a counterfeit gold bars quest from a temple, to retrieve four gold bars from various places. The questgiver offers 200+ gold per bar returned. When I return all four, he only pays for one and I give up all 4 bars.

In the UESP this is listed as a bug which was fixed in DFQFIX, so I installed that quest fix pack and reloaded my game to turn it in again, but I get the same result. The fix description says "The pay for each brick will go directly into your inventory" but that doesn't seem to happen for me. I just get the one pile of gold reward and the bars go away. Is this because I had already started the quest before I got the fix? Or am I doing something else wrong?

Unfortunately for almost all quest fixes they have to be install beforehand.

Ok thanks. Will future quests I pick up be ok, or will it only apply if I start the game over?

I don't know for this one. That is really variable. For some patches like this one it will patch other quests and you will be fine but for other patches you have to start a new game.

I don't know the answer for this one.