I loaded nirnhoned light shoes into a research slot along with a robe and gloves last week, and yesterday, the shoes slot was suddenly empty (conversely, this happened right after a nirn axe finished researching).
Reporting this in-game did exactly nothing; my item is still gone and my research slot is still empty -- and no, I didn't just ~forget to load it. I put the items up for research in order, like so -- chest - shoes - gloves; I had 3 slots open at once and of course I filled them all. Chest and gloves are being researched just as they were before.
smh @ ZOS, it takes bloody long enough to research things past 7 traits in the first place, and now I have to restart it and procure a new nirn item too? DISLIKE.
AD is the best looking faction. I don't make the rules, I just enforce them.