Our SFDC team loaded about 200k records wrongly (I know..) in the past week and those got syned over to Marketo. Few days later, they deleted those then uploaded again. We found out that when these wrong data were deleted from SFDC, those still stay in Marketo. For the reason, now we have about 200k duplicate records.
Here are my questions:
I’ve generated a smart list to locate the leads that have been created from SFDC and deleted lately. How can I double verify and make sure if they’re safe to be removed? I think they're safe to delete but want to play it safe.
Is there a way to prevent this happened again? Can SFDC/Marketo stop these new contacts/leads synced over to Marketo till SFDC team feel like the data load is good and ready?