[Freeswitch-users] Upgrade from 1.6.? to 1.8.?

For reasons beyond my control, I have been away from FreeSWITCH for a while.  I now need to get back to it, and get current. Is there a wiki entry or other guidance to help me move from 1.6 to 1.8. I see there is good guidance for actually building 1.8, so that should not be a problem. I am looking for guidance as to changes that I may need to make to the various .xml scripts that configure my telephones in house, connect to a provider, etc. Thanks for your time. William.