I asked bug to look into this. The reason this is happening actually makes sense for how it is set up but he is going to look into changing it.

When you lock something in your inventory and you have multiples, it locks the first one that was in your inventory. The way quick stock (and things like donation drives) is set up, it also stocks/donates the first item in your inventory...but it doesn't take into account locked items. So it is stocking your locked item since it was the first one in your inventory. But we are going to see about fixing that.

Hello! Just looked into this. Fixed the quickstock issue, as well as the wizard tokens issue. Quickstock shouldn't touch your unlocked items now, and neither should the wizard exchange.

While I was at it, I also made the Genetech Lab stop showing locked and Not Tradeable items, cuz that's been bothering me for a while too.