What is not migrated

Migration cannot successfully convert some Configuration Manager 2007 objects and data to the System Center 2012 Configuration Manager database schema during migration. These objects and data must be recreated in the System Center 2012 Configuration Manager database.
You cannot migrate the following types of objects:

• Queries
  
• Security rights and instances for the site and objects
  
• Configuration Manager 2007 reports from SQL Server Reporting Services
  
• Configuration Manager 2007 web reports
  
• Client inventory and history data
  
• AMT client provisioning information
  
• Files in the client cache

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