No. In general, only objects and configurations that existed in COnfigMgr 2007 can be migrated as the migration toolset was created for migrations from 2007 to 2012. It's fully supported for migrations of newer versions, but we've never modified the core set of functionality to account for newer features or object types.
Without knowing the full details of what you are using the migration tools for I can't say this definitively, but in general, these should be a last resort.