After fully upgrading the dawnstar sanctuary I went to the master bedroom to see what was bought when I noticed the unenchanted worn shrouded armor pieces on the book shelf and dresser. I took only the cowl then checked my inventory but could not find it. I thought this may be a bug so I loaded up two other characters that had also finished the dark brotherhood and noticed the bug was there as well. I then went back to the original save and tried to pick up the remaining pieces of worn shrouded armor and none of which were in my inventory after. The enchanted shrouded armor that was on the manequin was able to be placed in my inventory. I do have dawnguard installed but will uninstall soon to further test this. Just figured I would let you all know.

The worn shrouded armor found on the dresser doesn't work, never did has nothing to do with dawnguard, try the full set located near the archery range.

I knew about the set by the archery at the bottom of the stairs I just couldn't remember if the pieces in the master bedroom had always been bugged so I figured incase it hadnt I would report my findings. Thanks for your timely response, I'm glad we could get this figured out.