Pega Platform ™ 8.1 includes several changes to improve imports.  Changes to the Import wizard and Product rule eliminate the need to manually run several post-upgrade and post-import activities:

• If an imported archive file adds columns to existing tables, Pega Platform can automatically expose and populate the new columns during the import. For more information, see Import wizard.
  
• If an imported archive file includes new indexes, use the Import wizard advanced mode to schedule a post-import job to automatically add and populate the new indexes.  For more information, see Import wizard.
• If an imported archive changes the class-to-table mapping for a class, existing instances are automatically migrated to the new table.  For more information, see Import wizard.
• To automatically revalidate and save classes after an upgrade, edit the product rule definition. For more information, see Specifying product rule deployment options.
  
• To bypass updates for specific classes and only import new instances of those types, edit the product rule definition.  For more information, see Specifying product rule deployment options.