Getting an .eip back into a catalog

I was just teaching a two-day Capture One workshop, and one of my students ran into this issue. Since I don't generally use catalogs in my workflow except for archiving, I wanted to ask it here before opening a support case in case I'm missing something truly obvious:

1. Student has a catalog, exports a file + bunch of variants into an .eip so I can easily work on his file on my machine with his edits
2. I open up the .eip in a session on my machine, hand the .eip back to the student

And here's the rub: how do they get the modified .eip back into their catalog, easily--either as a new image, or replacing their original edits?

You'd think that you could simply hit Import, and the .eip would come up in the Import dialog, but it doesn't. (I'd consider this a bug--if you're using EIPs, yes, you're better off using sessions, but I can think of all sorts of workflows where doing this would make tons of good sense).

My (admittedly hacky) suggestion is to open up a blank session, unpack the .eip in its Capture folder, and reimport either the resulting raw file or the session.

Is there a better way to do this?