PowerShell Import-CSV format datetime: Data is be represented as 00:00:0 in the file output when the file has 2021-01-01 00:00:00.000

Question

I have tried formatting the dates and have not had any luck.
Sample data: 2021-01-01 00:00:00.000,2021-01-24 00:00:00.000,2021-01-01 00:00:00.000,15,17,15,17,22,402219.89,