The Attendance data by excel file imported into the attendance module have been lost in Odoo 13. How to fix it?

Question

I have successfully imported the attendance data into attendance data of 11/13/2019 by excel file.

And I have successfully imported the attendance data of next day too.

But the data of day 13 have been lost as you can see.

How to fix it?

Answer 1

My problem has been solved.

As you can see. I selected External ID before importing. It will overwrite the data and the previous data will be lost!