Let me provide some more details...I exported from Method the 'Contacts' table and someone went through and updated the 'Entity' and 'EntityRecordID' fields to "group" contacts that share the same shipping address (aka same customer). Now I would like to import the updated contact records but I'm not sure this will replace the current contact records with the updated "Entity" information or just add the "new" contacts.
I am also concerned that since Method was recently updated, the data may not transfer properly...any concern with that?