Huawei p10 lite deletes old calendar entries?

I have a huawei p10 lite cellphone. I now noticed more often that when a month is over, the phone automatically the dates of the last Monta deletes all I've looked in the settings and found nothing.

So if the dates are already long, then it is clear that your smartphone deletes them I mean what do you need the appointments, if you are already finished with all anyway?

Well my Samsung has previously kept it so you can see what was etc

Would have to be different with Huawei.