Hello,
The AllowClobber parameter will replace the names of verbs in the cmdlets only in the current session that you create in your PowerShell script. However, if you feel inconvenient with this parameter, you can use the Prefix parameter to prefix all imported verbs with a certain prefix. In this case, when ncalling cmdlet in the remote session, you need to prefix the verbs as well. For example:
*$session = New-PSSession -ConfigurationName microsoft.exchange -ConnectionUri http://exchangeserver/PowerShell/
Import-PSSession $session -DisableNameChecking -Prefix MySession
Enable-MySessionRemoteMailbox "%username%" -remoteroutingaddress "%username%@tennantname.onmicrosoft.com"
Remove-PSSession $session*