If a new address is found, it will go to the Preferred address section of the record. It takes the place of what ever data is currently there as it is pulling from the data that is in the returned results file. It will treat the address that was altered in between the submission and import as if it did not exist. If you elect to Save Old Address, then the address that you submitted will go to the Addresses Tab with the Address Type you select during the import. The address that you made the edit to in between the submission and import will no longer exist anywhere on the record. This is why we recommend not making edits to address information until you import your results.