Shared Mailbox of Separated User Management

[RonaldKriege]

When we have a user separation, we covert them to a shared mailbox and remove the license. Here is the dilemma, Due HIPAA we must retain these unlicensed users for 7+ years. As you can imaging soon, we will have more unlicensed users in our AAD, making it difficult to manage. 

Is there a way to move or hide AAD Unlicensed users without losing the shared mailbox?

Thank You

[#2]

Shared mailboxes are not a good solution when you have to meet compliance requirements. Use Inactive mailboxes instead: https://learn.microsoft.com/en-us/microsoft-365/compliance/inactive-mailboxes-in-office-365?view=o36...