Google account issue

[fiza]

We have a bit of a condundrum that I hope someone has an answer to.We had a school which joined our Trust. The school were not a Google school but we had to share documents with them and add them to shared drives. We asked them to convert their existing domain email addresses to Google accounts as a quick fix so they could be added to shared drives. Now the school have created their own Workspace Fundamentals tenant using the same domain name but each time they log in they are asked if they want to sign in to their personal account or Organisation account. Is there any way to resolve this so that it is always the organisation account? Also does anyone know what happens with the documents and shared drive permissions that were given to those accounts before they were added to the Workspace Fundamentals domain? Will the shared items still be visible to them when the sign in with their organisation account? Edited June 8, 2022 by fiza