We are already using SiteEdit 2009 SP3 in tridion 2011 sp1 which has dwt, vb script compound templates for pages and components. We are planning to migrate to tridion 2013 sp1 and Experince manager as well. How different is exeprience manager from SiteEdit? What are the points to be considered for migrating from SiteEdit to Experience Manager? How complex would this migration be keeping installation as out of scope? Whether existing siteedit span tags need to changed or not?
Update: Is SieEdit 2009 SP3 compatible with Tridion 2013 SP1?