
Hi @frob
> Do the collaborators lose access immediately, or when?
Based on my test, the collaborators won't lose access immediately.
In my opinion, they can still access shared files for 1 year that you set as retention period.
> Do their manager gets access, and for how long?
If you tick the box of "Enable access delegation“, then when a user is deleted, the user's manager is automatically given access to the user's OneDrive for 1 year (retention period).
For more information, please refer to "Configure automatic access delegation".
> Can collaborators with Edit permission still edit even though the user's account is deleted?
Yes, they can. These shared file can still be edited.
> How to give someone read-only access to the deleted user's content?
The manager, the secondary owner or the admin access these content, then share to others with the read-only permission.
Any updates, welcome to post back.
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