Google Sync offers the ability to upload or synchronize the Contacts and Appointment Calendar from your Chaos Data directory with the data in Google Calendar and Google Contacts!
Your contacts will be added to a new group called Chaos Contacts. This group on Google Contacts is what will synchronize with the Chaos data on our side, so if you add a new contact to Google and want it to show up back in your Chaos program, be sure to add it to the Chaos Contacts group, too.
Calendar items are synchronized with your default calendar for your Google account.
As you can see from the screen shot below, you'll be given the option to delete data from the Google version of Chaos Contacts and from your default calendar. You'll also be able to disable the bi-directional two-way sync if you want this to upload only.
Home Page - https://www.chaossoftware.com/google-sync.aspx