I had a locked bow that I used in several Armory builds. I started in CP Imperial City using it, but then my inventory got full from looting the mobs in there.
I then queued for Vengeance, and wanted to switch from that bow to a one hand + shield. I deleted a trash item that I had picked up from Imperial City and played Vengeance as normal.
When I left Vengeance by porting to my house, I sold the remaining trash from my inventory and switched Armory builds. However, when I went to switch back to the build I had been using in Imperial City, I noticed the bow on the primary bar was gone.
It wasn't in any of my Armory builds, and it didn't show up with an inventory search addon. I ultimately decided to reconstruct a replacement bow and saved it to those builds that had lost it.
My guess is that the unlocked trash item I had deleted somehow deleted my locked bow, possibly as a result of how the Vengeance inventory works, or an incorrect reference.
@ZOS_Kevin
PC/NA — Lone Werewolf, the EP Templar Werewolf
Werewolf Should be Allowed to Sneak
Please give us Werewolf
Skill Styles (for customizing our fur color),
Grimoires/Scribing skills (to fill in the holes in our builds), and
Companions (to transform with).