Several modules still have "trees" nodes which used to be for the menuing in <5 versions of adminCentral. these should be removed as they are no longer used. It should be researched if there is more code to remove.
It should be researched which modules still have this.
I create this ticket as a parent ticket - tickets for all modules should be linked to this one.
I did a search on the CE bundle and came up with modules:
imaging, adminInterface, pur (MGNLPUR-114), forum, stk