02-16-2009 12:20 PM
02-19-2009 07:20 AM
The best way that I can think of doing this is to import a value into an unused field. Then lookup the field and mass change Email Marketing by going to Edit > Replace. In the CSV file, you will need matching criteria for duplicate checking so that it will merge with existing records. So for example, the CSV file will have Contact, Company, Email as matching fields and User 1 will be the field you can lookup to do the mass replace.