I have a number of events (tutoring sessions) that repeat weekly, but that sometimes have individual appointments in the series deleted (eg student absence.)

If I create a weekly recurring event in busycal (MacOS) in a Zoho calendar it just disappears on sync.

If I create a weekly recurring event in Zoho, it will appear in BusyCal as a repeating event.

However, if I delete one of the events in the series in BusyCal, the repeat is turned off in Zoho, leaving only the original event (NONE of the repeats. And the item is "converted" to a single instance event.) On. sync BusyCal will match the broken Zoho calendar.

As I use these entries to help track billable hours, this behaviour makes Zoho calendar unusable for me.

I also noticed that Busycal seems to represent a weekly repeating event (on the same day) differently than Zoho. In Zoho it looks to end up being a custom schedule with only a single day selected. Not sure if this is just a UI tweak or represents a difference in how the underlying data is represented.

Fingers crossed this can be fixed (I know recurring events are complicated!) as I'd like to move more of my business to Zoho.