Email alert - Email alert is "Yes" displayed when Email alert is "No" set during import customer.

Steps to reproduce :

1. Login as admin
2. Go to account menu > Customer 
3. Click on import
4. Fill up details with Email alert set as "No"
5. Select file and import
6. Back to customer listing
7. Click on edit customer
8. Click on alert threshold
9. Verify Email alert status is Yes displayed

Expected result :

  > Email alert status should be changed properly when import customer.

 > See attached video.