User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-45027952-20201215201410/@comment-1038387-20201215203128

There have been some wikis with breakage in a major way, but most have been resolved. However, no wiki was destroyed. The content is still there.

UCP has been around since March and all big wikis are on it already. What's left is just the stragglers.