I registered a PI Archive (version 7) from PI Server (version 3.4.370.76) to PI Server (version 3.4.395.80). The destination PI Server was built from the backup of source PI Server. The archive was automatically upgraded to version 9 and I did not encounter any error. I could retrieve historical values from the archive.
I just want to know if there is any issue in doing this or do I need to reprocess the archive on the destination server before I register it.