Hi there! This is Jennifer White from the University of Maryland, and we have had similar questions about an archive feature as well, and we are looking into enabling bulk enrollment, so I'm sure this will become a more pressing need for us as it is for you. Instructure has development for an archive feature on their to-do list, but will likely not get to that until later this Spring.
I also wanted to let you know about the Catalog Users' Group that we at UMD host. It is comprised of folks from (mostly) higher ed to discuss these sorts of things, and representatives from Instructure are usually in attendance to hear our feedback/requests and offer us updates on development. The group now meets monthly, and our next meeting is coming up on Friday, 07 February 2025 at 2:00 PM (ET). If you would like to join our group (which puts you on our group listserv and the meeting invitations), please send a quick message to itsupport@umd.edu, and mention "Catalog Users' Group." Also feel free to share this info with anyone you know who also might be interested. Our group is very collegial, and we've benefitted from each other's experiences!
Thanks - we'd love to have you with us!
Best,
Jennifer