We recently made some mass updates in our SFDC account to reflect the new lead sources that we have. These lead source changes did not sync over to Marketo. I am trying to determine if I should manually change the lead sources in Marketo (via smart lists & data flow changes) or if there is an admin setting I can remove to allow these source changes to sync back over.
For the future - what admin settings should be enabled to allow SFDC changes to flow back to Marketo? What are the pros/cons to having certain field updates blocked?
This could be caused by a few different things:
You said "mass updates", and whenever I see that phrase I think "backlog". It could be that the Marketo sync just hasn't caught up with the changes yet.
Is the field blocked from updates in Admin > Field Management?
Block Updates to a Field - Marketo Docs - Product Docs
If it is, you may need to uncheck "Salesforce Sync" as one of the sources to block updates from.