I have a lot of existing map services in ArcGIS Server 10.0.4. I am planning on migrating to ArcGIS Server 10.1 very soon. Will the existing Map Services and Map Cache be preserved during the migration? I hope I do not have to recreate my map services all over again. Is there a document that ESRI has published with this sort of information OR do we need to "wing-it" and see what happens OR do we need to sign up for the $1,000 ArcGIS Server 10.1 Migration Course in order to get an answer?