Hi Mindy,
Most likely this is happening because of how CC email addresses are stored on the contact record and how your email templates are configured.
CC Email Address is saved on the contact record and not the event level, meaning that once it is populated for a contact, that CC is part of their profile and available in any event where that contact is used.
If an event email's Advanced Settings are set to "Send an additional copy of the email each time it is sent" and include CC Email Address, that CC will automatically receive all those emails in every event that uses that template.
When you copy an event or reuse an email, the Advanced Settings (including "Send an additional copy…" and which fields it uses) come along for the ride, so it looks like CCs are "automatically" applied in new events, but really you've brought forward that configuration.
You can remove the CC email addresses by either manually deleting them from each contact record, or doing it in bulk by exporting the contacts you want to change in the Address Book, clear the CC email address column in excel (don't delete the column itself, just clear the values of the CC email address), leave all other fields as they are, and re-import.
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Megan Burns
Customer Success Manager
Cvent
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