Hey Rob,
Thanks for reaching out to us!
I’ll have to do some research but I believe the best way to approach this would be to store the event slug rather than the ID. Currently I don’t believe we have an option for getting all instances of a recurring event from the main event ID. However, all instances of a recurring event are stored with the same title so if you use a “tribe_get_events” query and targeted the title, that may be the best option for getting the recurrences of the event.
Let me know if this helps.
Thanks!