Items disappear when i go into a trading bench

[koza1brada]

I'm trying to sell an Equinox Prime Chassis. The first time i tried to sell it, I went in a dojo and when i went to trade it didn't show my Equinox Prime Chassis so I went back in to my orbiter looked at my inventory and it was gone. I relaunched the game and my Equinox Prime Chassis was in my inventory. Then I tried to sell it a second time and before i joined the dojo it was in my inventory and again in the crafting menu it wasn't there. Plz help

[Oreades]

Where you trying to sell a blueprint or an assembled chassis? 

Case you can only trade blueprints, if you've constructed it then it's yours forever.

[koza1brada]

well crap I'm an idiot then thanks