User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-29123155-20201029001643/@comment-44807868-20201029051509

"Attention: We have migrated your community and all of its content onto new wiki software. Find out more in this blog post. Article Comments and/or Message Walls are still being migrated and content will be incomplete. We will notify you once the migration completes."
 * 1) There's a WikiActivity script created by a user. You can look into it if the Recent Changes doesn't suit your preferences.
 * 2) An alternative to the retired poll feature is Discussions poll, if you aren't aware.
 * 3) What do you mean that galleries are messed up? Can you provide a link to where it's happening?
 * 4) No comments are going to be deleted. The article comments and message wall posts just take a bit longer to be migrated. The wiki you're referring to likely has a top banner notification showing up that states following: