You can test with one user to change the msRTCSIP-DeploymentLocator from SRV: to, wait for AAD Sync and check the Interpretedusertype. If this is ok for the user, clear the msRTCSIP-DeploymentLocator and check the Interpretedusertype after AAD Sync.

This is for all users:
Get-ADUser -Filter {UserPrincipalName -eq "UPN"} -Properties * | Set-ADUser -clear msRTCSIP-DeploymentLocator

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