Unable to replace self paced offering with self-paced learning

Scenario:

1. Our current learning catalog is setup as follows:
   1. Course > contains Offering (1 or more) > each Offering contains 1 activity AND
   2. Specializations > contains Courses (1 or more) > contains Offerings (1 or more) > each Offering contains 1 activity.
2. We do not manage content in OHCM. We do not use Learning self-service yet; only admins access learning pages to manage learning. Learnings are assigned manually or loaded via interface and completed manually in OHCM using Offering > Manage activities. Completed learnings certifications are loaded to the employees person profile as learning outcomes.
3. Since we do not have content, we are to use the 'Task-based Self-paced learning' item format going forward instead of Offerings.