Thank you so much for your fast reply, Raze. Since posting this question originally, I did go back to the door and did the Unlock in the F11 utility but now the door sounds like it opens and says it is open but does not actually let me in...the door does not move nor disappear but right clicking it make the info text for the door move back and forth between close door and open door but the door itself does not change at all.
I will go back and see if the bag appeared under the Ba'al platform or elsewhere out-of-sight, however, I would say the game is looking at the quest log because 3 of the 4 quests show done except the first one, "Lock and Key". I am going to try your last suggestion/idea which is to trigger the Dream cutscene that begins it...at least that is what I hope it will do. I will let you know if it does not work. You can assume it worked if I don't let you know otherwise.
It seemed to me that Ba'al ran off to a teleporter (just as I was giving him the final blows) and didn't drop anything which would seem to indicate that I did that quest out of order but it said somewhere to do the 4 quests in any order. Anyway, in my quest list, it lists "Lock and Key" as the first one so it makes no sense to make the first one dependent on doing any or all of the others first. Just saying.
Again, thank you for helping. You da' best!