Steps to Reproduce:
When Bug Fest system was migrated from Flameflower to Goldenrod release users noticed that:
1) 2 permissions with the same name are visible but only 1 works
2) Obsolete permissions are visible. For example, all "ermusage" permissions are obsolete and should be deleted during module update. But the are visible along with new set of "eUsage" permissions.
That also raises the question of mapping of new permissions to the old permissions sets as well as removing obsolete permissions from these mappings.