So I go to the store and buy some caravan cards for my deck, but they don't ever go into my deck. I can see them in the misc section of my pip boy. I thought this would be like the power jars and you just drop them and pick it up, but that doesn't work either. Is my game bugged or are these cards in my deck, but I can't tell.

Well for them to be in your deck you need to add them to your deck. When you buy them they just go into cards you own which are all those cards on the bottom when you enter Caravan. all the cards on the top of the screen are the ones in your deck.

Play Deck
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Owned Cards

Don't take any offense if you already know this, this was just the first thought that came to mind. Just double check what I mentioned above, if that isn't the case then maybe it is some sort of bug.

I think you misunderstood. What happened is I bought the cards but they are still in my inventory, noty deck. So I can't even see them when I set up the deck for caravan. I checked the wiki and found a possible fix so I'll try that tommorow, but thanks for the reply.

Well I took it literally since your deck is what is up on the top row and owned cards are on the bottom row so maybe that's why i got mixed up, but what was the possible fix my buddy just said he is having a similar issue.

The wiki said to put the individual cards that are in your inventory into a storage container like a safe or locker. Then, you take the cards out and they should go into your deck. I haven't gotten the chance to try it yet, but it should work.