Hi Mandy-
No worries about closing this thread, since it’s here on our website instead of WordPress I get to control those things!
Total Upkeep did have a new release yesterday, though Font Awesome hasn’t been updated in about 3 months. Since both of those plugins are hosted on WordPress.org, and Total Upkeep is ours and Font Awesome isn’t, I’m speculating that your site may have some cached “transients” from before your site’s migration.
Without getting into the technical nitty-gritty of what that means, I think it’ll go away after a day or so when your site phones home again to check for new updates. If it goes on for more than 24 hours or so, let us know and we can try to take a closer look for you.