I would like to request for restoring permissions across wikis. Although we can restore them through ManageWikiPermissions manually, I have found out that all the customized user groups has been completely deleted, and it looks like all the permissions has been reseted to the default permissions.

This will cost a lot of unnecessary work for many local bureaucrats. I believe there is a back up for this, and thus would want to have all the permissions restored as the permissions we used to have before the incident at the system level.