I'd like to rollback a 7.0r1 sa2500 to the previous 6.3, I understand I will loose and configuration changes made since the time of the upgrade.
Is there any tool or method that can tell me what these changes might be?
Is is possible to export the 7.0r1 configuration (system and user) and then import these back in after the rollback?
You can't import a later stage config into an earlier stage box. However, what you can do is to do an XML export on the 7.x box, rollback, then do an XML export on the 6.x box.
Use something like "CompareIT" or an XML editing tool - match the two configs and then take the delta from the 7.x and load it into the 6.x XML file and bring it in that way.
Hope that helps.
If you have an XML backup of 6.3, you can do a diff between XML files from 6.3 and 7.0.
Then try to locate the changes en 7.0 and selectively export these changes in XML format.
Then rollback to 6.3 and try to import XML files from 7.0 to 6.3 .
If you have split changes in "small" XML files it will be easier to adapt export from 7.0 to 6.3 . (XML schema has probably changed between 6.3 and 7.0).