@ekohl
I tried the commands on a hammer devel box pointing at my devel box and was able to get them to run ok:
[vagrant@hammer ~]$ hammer content-view filter create --organization="Default Organization" --content-view="view" --name
="food" --inclusion=true --type=modulemd
Filter created.
[vagrant@hammer ~]$ hammer content-view filter rule create --organization="Default Organization" --content-view="view" --content-view-filter="food" --module-stream-ids=2
Filter rule created.
The last commit being the one in question:
[vagrant@hammer hammer-cli-katello]$ git log
commit 61d1a50e1d3ae30b7430ab8f3657b33b33285698
Author: Chris Roberts <chrobert@redhat.com>
Date: Tue Mar 2 17:34:18 2021 -0500
Refs #32000 - Remove legacy export/import commands
Screenshot of the UI showing the filter: