I have purchased every dlc on the day that each one was released and have also beaten each one.

After finishing Lonesome Road I looked back through my DLC specific challenges and see the History Sake's one which is stuck at 8/10 (since there are only 8 to find) and I see the Survivalist Cache one from Honest Hearts at 5/6 so I was going to find the last one.

Anyways I go back to the Northern Passage and get to the end of the tunnel to get into Zion Canyon and when I try to go through it it says "You need to travel with the Happy Trails Caravan on your first trip to Zion Valley" which can't happen since they all died from when I first played the dlc.

I have returned to it in the past and I have no idea why but could it be from having all the dlcs?

I really have no idea what would cause this, so any ideas?

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EDIT:

I realized why now.

It is because I didn't have the Zion map in my inventory so all I have to do is pick it up and I can go on through with no trouble, lol.