Moving a SQL 2008 server to sql 2012R2

• Moving a SQL 2008 server using Active Directory authentication from an old 2003 Active Directory to a new Windows 2012 R2 Active Directory environment
• Optimizing a CRM Dynamics database that has been through several migrations. Currently production is on SQL server 2012

See attached files(s) have you moved a "functioning" production data base from one internal domain to a new internal domain after unbinding the server from the old domain then re binding to the new internal domain before ?