Hello @AnneMarieR44 ,
If the Salesforce integration is setup and managed via your Constant Contact account, whenever you setup a sync, you select a Constant Contact list and a Salesforce list to import from. I'd advise checking its current setup by following along with our article on connecting your accounts in the systems.
Beyond that, if you're needing further guidance or need troubleshooting for the syncing, I'd advise calling our general support and requesting a transfer to Tier 2 integration support.
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