Hello Eva,

Thank you for providing that csv to test with, unfortunately I wasn't able to reproduce the issue nor have I heard of something similar before. When I tried it that record seemed to be in place (see screenshot). You can set a default sort order (to date/time) in the default view definitions of the table. This will make it so the grid will default to using the date column when ordering as opposed to the primary key.

1. What version of Labkey are you running?
2. Were you hoping that the order of the primary key would also represent the order of the date/time column? As the primary key increases so does the date/time.

Thanks,
Chet