Also of note is that the importer throws an error when using the one-way sync files it generates.
Granted this shouldn't be used much/at all

(Our stake isn't using the calendar yet, so I created all of the stake events in a ward-level calendar and was then trying to make a copy to push to stake level. I want a copy just so my work isn't "lost" and we fly blind again

)
Specific error message:
"There was an error while trying to parse your ICS file. We currently support ICAL files created by Google Calendar or Outlook. If you are importing from one of these applications please report the issues to customer service."