Although the events cannot be viewed or changed from Apptivo, it is important to note that Apptivo retains a backup of all events data. This is important if you are ever to move your site to a new server, or start from a new WordPress database.
Because the data is stored with Apptivo, your events will remain in sync from any WordPress site, so long as it uses the same site key.
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Events: How it Works with Apptivo