I was able to use the menu item to create an .ics file which imported OK. Sorry I didn't try to get this to work first and I wouldn't have bothered you.
The csv file was created by JEvents' "printcsvevents.php" file I downloaded from the link on the bottom of the page at
http://www.jevents.net/docs/jevents/ite ... -of-events, which perhaps should have inserted quotation marks if they're required for the import.
Overall, the issue of export and import seems not to be well documented. Perhaps one might look at writing up a step-by-step approach.
I'm still leery of the Joomla upgrade approach - if it didn't work I'd have to figure out how to restore an Akeeba backup of my test site, which I guess would take yet another couple of hours from my work-day. I have about everything I need moved over now including, with this technique, all my calendar events.
Thanks,
Jim