Thread:Project:Support desk/Permission Problem

I'm running a bit of an unusual setup right now. There are two copies of mediawiki:

Wiki A: Editable only by sysops and bureaucrats, shares image repository and user DB with wiki B Wiki B: Editable by autoconfirmed, sysop, bureaucrats, image uploads are handled by wiki A, upload link redirects to wiki A's upload page

My problem is after disabling editing by autoconfirmed users on wiki A, no one but sysops and bureaucrats can upload images. Based on the documentation I thought the edit and upload permissions were totally separate, so I am confused as to why disabling one would affect the other. The permission problem didn't occur until I disabled editing, so I am certain there's no other cause.