How do I migrate existing Apple ID accounts automatically after federation for a domain is enabled in Apple Business Manager?

We just registered the company domain on Apple Business Manager and enabled federation. A lot of co-workers used their work email for iCloud already and are now asked to migrate those "personal" accounts. Clearly those accounts are not personal and the workflow to migrate those accounts is really clunky and confusing. Is there a way to just tell Apple that those accounts should be left alone and just enable SSO on them?