User blog comment:TimmyQuivy/On the Importance of Upgrading MediaWiki/@comment-1998339-20200507171442/@comment-24006128-20200507172922

During Phase 1, user groups and skin stuff is largely unchanged. We have to adjust some permissions due to name and/or scope changes since 1.19, but the intent is to keep privileges as close to the same as possible.

We don't have anything specific to share about Phase 2 changes at this time.