Step 3 and 4 went perfect only some attributes didn’t migrate.
At Step 5 we received the following error
During Migration the Magento backend was logged in and the PHPMYADMIN was looged in. Is this a problem?
Start your code hereStatus: fail
Message: CDbCommand failed to execute the SQL statement: SQLSTATE: Integrity constraint violation: 1062 Duplicate entry '480881' for key 'PRIMARY'. The SQL statement executed was: INSERT INTO `catalog_product_entity_media_gallery` (`attribute_id`, `media_type`, `disabled`, `value_id`, `value`) VALUES (:yp0, :yp1, :yp2, :yp3, :yp4)