I urgently need a tool to migrate a domain from one workspace to another and keep all emails, drive files, privileges and permissions intact
Sorry to be the bearer of bad news, but itโs not easy, honestly. Itโs largely a matter of exporting all those usersโ data and reimporting it. There are various third-party tools, that purport to make it somewhat easier, at least for some parts of the data, but itโs imperfect at best. Examples include:
To add to what @icrew outlined, removing a domain from Google Workspace is a very tricky process.
If not done correctly, there is a serious risk of losing access to data. Not only on core things like email delivery but also on 3rd party systems (any system accessed via a "sign-in with Google" option).
It will also complicate access to other Google Services like Google Analytics/Google Ads.
So it's best to contact a Google Reseller or Partner to handle the process.
@Mohamed_Tarek Please check this out