Hello, we recently changed our Lead Source values in Salesforce but I'm unsure how to see which forms in Marketo are mapped to which Lead Sources, so I can rewrite the Lead Sources. What's happening now is I clean them up manually in Salesforce and then every night, Marketo remaps them to incorrect/obsolete Lead Sources... Any help would be appreciated.
There is no way to get that info under the form of a report.
I would start with the leads that have the wrong values and go to the activity log to get the origin of this wrong value, and fix it. After a while, you will have cleansed them all.