What's fixed

The new Image Tags column is ignored to avoid an error when you migrate from SharePoint online. Some tags should get generated by an AI algorithm in your destination, and Microsoft 365 should extract tags from the embedded metadata of some of your image files. It can take up to 48 hours for Microsoft to generate these tags. Tags you entered or removed manually are not supported.

You should no longer have issues migrating files larger than 15GB to SharePoint online in Insane mode.