I have meetings on my google calendar from many years ago that were with my customers. I would like to be able to track those meetings and I've setup the google calendar sync. It is working correctly but it only syncs the last few months of meetings. How can I Customize the date range that it will sync. 

I have discovered that it will sync older meetings if I go into them and make a change. I have tried createing a new google API key thinking it would reset the sync status.

Is there an advanced option somewhere the will allow me to sync all data regardless of age?