What is migrated..

Migration can migrate most objects from Configuration Manager 2007 to System Center 2012 Configuration Manager. The migrated instances of some objects must be modified to conform to the System Center 2012 Configuration Manager schema and object format. These modifications do not affect the data in the Configuration Manager 2007 database.
You can migrate the following types of objects:

• Collections
  
• Advertisements
  
• Boundaries
  
• Software distribution packages
  
• Virtual application packages
  
• Software Updates:
  
  
  • Deployments
    
  • Deployment packages
    
  • Templates
    
  • Software update lists
    
• Operating System Deployment:
  
  
  • Boot images
    
  • Driver packages
    
  • Drivers
    
  • Images
    
  • Packages
    
  • Task sequences
    
• Desired Configuration Management:
  
  
  • Configuration baselines
    
  • Configuration items
    
• Asset Intelligence customizations
  
• Software metering rules