Feature summary: Users with global (but not local) rights currently don't leave a redirect while moving to draftspace using the MTD script.
Per Wikipedia:Global rights policy, "Global rollbackers may use the ... suppressredirect function[] on the English Wikipedia only in the context of counter-vandalism efforts"
Discussion at: https://en.wikipedia.org/wiki/User_talk:MPGuy2824/MoveToDraft#Only_sysop_and_extendedmovers_should_move_without_leaving_a_redirect