I cannot seem to find a way to update the default location for a recurring event; for DOSR, we have a weekly event that rotates locations, but every week the event is created with the first location we ever used.
First in series: https://gettogether.community/events/271/thursday-co-working/
Upcoming event (manually edited location after its creation): https://gettogether.community/events/508/thursday-co-working/