This is really helpful, thank you, Greg. Something I'm currently testing: what happens when a lead/contact is unsynced and deleted from Marketo, but then resynced back to Marketo months later. It seems like Marketo triggers are instantly executed. For example: I deleted 5,000 inactive leads from Marketo. Then months later, a mass update in Salesforce caused these leads to be resynced back to Marketo. Since there was no historical information on these leads in Marketo, a bunch of triggers were executed, such as updating lead score, adding leads to engagement programs, creating Interesting Moments, etc. I chatted with Marketo support and they said it was by design. Even if I create a boolean field like Sync to Marketo in SFDC to prevent leads from auto-syncing when they're edited in SFDC, the same scenario above will happen because Marketo doesn't have any historical information on that lead. The triggers will be executed and the leads will run through the flows, even if I set the smart campaign qualification rules to allow leads to only run through once. Have you done any testing on this? Best, Anthony
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