The system does that, but it is YOUR responsibility to check that the info you are inputting corresponds to the points you are claiming.I’m also worried about it but they were the ones who rounded up my points to 478 from 453 on July 1st. I didn't give any false information, in my profile my month and year of starting work is 2017/08. I’m keeping my fingers crossed and waiting for my eligibility check to complete.
22 days short of 3 years is not the same as 3 years.
Good luck in any case.