csv file imports only the last row when imported in drupal 8 webform I have a csv file which contains the entries from drupal 7 webform. I uploaded the csv file in drupal 8 webform. It imports the data, but only the last entry is shown in the drupal 8 webform's results.

This is the csv file:
columns A-D : IP Add, UUID, Phone Number, Email.  (dummy entries).



When importing the mapping from the csv file, it shows me the below options:


I select the matching columns on the destination(submission) and then click import.
After importing this is what drupal displays:



Only the last row from the csv file is updated in the webform.
The UUID for all your CSV records is 1 and when they are being imported, each row is overwriting the previous row. You also need to include the column headers as the first row in the CSV.