I have had issues with the migration tool update form 2010 to 2012 it does not move over plc or file dwg to my 2012,
1,The plc that I created in plc editor with the spacing and breaker did not updated the 2012 or bring the blocks for the inputs to create the plc module.
2,The migration did not bring my footprint files over or update the footprint path in my database file.