Date before 01/01/2000 in Business Objects Cloud

Hi experts,

I have stumbled upon a strange issue in SAP BusinessObjects Cloud. Whenever I try to import the data with "Time" dimension, BusinessObjects Cloud informs me that I have some sort of data issues. The problem appears for a column called "Birthday" and the description of the problem looks like this: "Out of allowed time range". The issue persists only for dates before 01/01/2000. It makes loading customer data (including birthdays) impossible.

Any ideas why is that so? Maybe it's some sort of a limitation of a trial account?

Best regards,
Vlad