Quad Stash Tabs unable to be Merchant Tabs

I only used quad stash tabs for my selling tabs for years at this point (approx 12 of them) while i only have 2 purchased normal premium tabs. the fact that i need to buy whole new market tabs to sell my stuff with async is ridiculous as quad stash tabs should be able to be converted just as normal ones can.

If anything, at least, it should give you 3 or 4 for 1 quad tab.