Ramifications to changing the offline address book identity - server

Issues after migrating from a Microsoft Exchange Server 2003 to a Microsoft Windows Exchange Server 2010

Getting event errors that the offline address book is not available.

Found the Offline address book is looking at the old SVRSVR server.  In order to change this, I need to use the Exchange Management Shell (not the management console):Set-OfflineAddressBook -Identity "SVR-DC01" -IsDefault $true

This is on a Windows 2008 R2 Standard Server 64-Bit
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Questions?  Will their be any ramifications of doing this on a live system (in production) with users actively logged into the domain and/or their email accounts?

Will any service need to be stopped and restarted?

Will the server needed to be restarted?...