Downloading archive from ojs 2.4.8

Hello! We have migrated from ojs 2.4.8 on an old server to oj 3.2 on a new server. We were able to migrate much of our content, but one of the things we were not able to archive was our archive of rejected journals. We would like to close the old instance of OJS and retain the archive and the unpublished workflow.
Could someone please direct me to the correct files within the OJS systems I should download so that we have this record of past activities in our files?
Many thanks,
Michelle from Catalyst Journal