Need help for this migration path.
Old unity 4.0 - voice-only configuration
New unity 7.0 - unfied messaging on new hardware.
Issue: Users on unity 4.0 exchange currently have different aliases from the new exchange server that they are going to be migrated to.
My understanding is that in order to migrate users from unity to exchange, the aliases must match. So, which aliases I have to change? Unity 4.0 or new exchange without breaking users voice mail and email services on both server. What's the right steps to do this. Any suggestion is much apreciated.