I need to migrate a site collection from one office365 tenancy to another office365 tenancy.
The moving of information is not a problem, however the moving of users permissions will be a problem i fear.
The reason i fear this is that on Go-Live day I need to remove the domain from the old tenancy and assign to the new tenancy but at this point i fear i won't be able to map the user accounts using my migration tool...
Process and my concerns.
Created user accounts on Tenancy 2 (T2)
Migrate SharePoint using ShareGate (3rd party tool) to copy from T1 to T2 (initial copy)
Go Live Day
Remove domain from T1
Add Domain to T2
Assign users on T2 correct domain association
Do Another migration using ShareGate .
At this point i fear the domain change will effect the switch and as such cause me issues.
Anyone clarify this for me ?
Both ShareGate and Microsoft have told me to ask the other one!