Cannot push calendar events with org-id

[EdGrrr]

If an entry already has an org-id, then it cannot be pushed to the google calendar. A 404 is returned instead. I think this is because org-gcal is trying to use the org-id to locate the event in google calendar.

With an example event;

* TestPersonal                                                  :CAL:                                    
  SCHEDULED: <2019-12-18 Wed 08:00-09:00>                                                                
  :PROPERTIES:                                                                                           
  :ID:       bf928034-9dac-463b-a038-a6f988480269                                                        
  :calendar-id: <my-calendar-id>@group.calendar.google.com                                  
  :END:

org-gcal-post-at-point returns 404. If the :ID: property is removed, then everything works as expected.

Could the gcal ID property be renamed (e.g. GID?). This might fix the issue.

[telotortium]

I've known about this issue for a while. I think adding a new property for the calendar and event ID is probably the best solution. However, the reason I went with using the ID in the first place was to be able to use org-id-find to quickly navigate to an event to update it from org-gcal-sync. Ideally the logic from that function could either be reused as-is, or else I could make a copy of the logic but change the property name.

[EdGrrr]

I was looking at this a bit over the last few hours. If I understand it correctly, having multiple IDs for a entry is fine, so the current setup should work.

Is this connected to #52? Presumably, if it was possible at one point to request the calendar-id, it would also be possible to determine the google-id for the event too? I have very little elisp experience, so I am not entirely sure what is possible here.

[telotortium]

@EdGrrr In #71 I added code to only use the existing ID property if it matches the format of the IDs generated by org-gcal, which won't match a UUID like you have there. Can you check if that works for you?