When I delete/replace items on our calendar it’s not getting removed/updated in the calendar .ICS file. As a result our parents are seeing non-existent events or duplicate events on their smartphones. Likewise our public calendar on our website has the same bad information.
Below is an example pulled from our website. As you can see we had a placeholder for the Klondike Derby on Jan 23rd. This entry was updated and now it shows up twice on the calendar and in the .ics file (I checked). Thanks to COVID the derby was rescheduled to Feb 13. In Trooptrack we see no events on Jan 23rd, only Feb 13th. But the .ics file is showing three events.