I looked up these problems online and the consensus is that these kind of issues with mods showing up is based on not having the latest update for either OB or CS, I checked and mine are both 1.200416 (or whatever) and not only that but I took it a step further and added a vanilla item to the chest to see if it was an issue with CS like what is common but the item appeared (it was an eboney shield)
so I then thought maybe its an issue with the mods or some other compatability issue, so I manually went to one of the locations of armor that did not need prerequisite, (it was ancient silver armor mod btw) and sure enough the armor, modded frost atronach and claymore were there and looking great. so I tried to put copies of that armor into the chests because I knew definitively I was able to run that mod, I got the same results with "chest" item as the first attempt. reloaded CS and checked the chest's inventory and instead of the armor as I had when last saved that mod there were two items with the ID of the chest they were in.
I have no idea what any of this is about, but it doesn't appear to be the same as what other people have had issues with from what I saw looking this up. can any one point me in the right direction of resolving this.