Issue Summary

When uploading a CSV to import customer details with set a value empty, error indicate wrong Rows.

Steps to Reproduce

1. Create Jira Service Management project
2. Invite customers as portal only customer.
3. Add Customer's details
   Project > Customers > Manage details > Manage detail fields > Create field
4. Click [import from a CSV]
5. Download the CSV import template and add a rows, setting detail field "Phone" to empty. (i.e. ,,,"",)
   sample csv file : set 2user's(Row2 and Row3) phone number set empty.

   Email,User Name,Department,Account type,Phone,Role
   cust1@xxxx.com,name01,dev1,User,,Manager
   cust2@xxxx.com,name02,dev2,Customer,,User
   cust3@xxxx.com,name03,dev3,Pasrtner,112345678,Admin

1. Upload the CSV and wait for the import to complete

Expected Results

Row 2 and Row 3 shows error. 
refer : JSDCLOUD-13520

Actual Results

Not Row 2 & 3, but other rows will be displayed instead of an empty row of values, like "Row 3 and Row 4", "Row2 and Row 4". (see attached file).
However, there are times when it will display correctly.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available.