Hello,
If you go under Events > Settings > Imports, you can set the Event Update Authority to “Overwrite my event with any changes from the original source.” – this will update the events on your site each time the import is run. However, this does not replace events, it only updates them and adds new events if new events have been added to the source since the last import. If you are creating a new import (vs importing again from the same source), then you may wind up with duplicates. If your CRM offers a format that Event Aggregator supports, I would recommend setting up a scheduled import so that these changes will automatically be made on your site each time the import runs.
If you have any questions or if I’ve misunderstood what you’re looking for, please let me know!
Thanks,
Jennifer