The only thing that changed in my inventory in regards to secondaries is that I received the Dex Furis from the alert. I have sold no secondaries in the hours between my first checking the Deep Archimedea Monday and checking them again now, about 24 hours later. Actually I don't think I've sold anything from my inventory at all.
I don't remember all the weapons available the first time, but I do recall the Dual Toxocyst (which I own) being one of them. Now they're Afuris, Ocucor, and Kohmak, of which I own none.
Proof of current parameters.