content-view filter

Hello,

on sat 6.5 , I create a cv, with two filters:

• All packages without errata (check the box) and add all repositories type --> include

• Exclude errata date /type updated start date 2019/12/5 (all repositories).
  Publish and promote.

I try to install the package freetds on vm, I can't find it, and so can't install it--> output from yum -> error: nothing to do

If I change my exclude errata to include errata updated with end date to 2019/12/5, I can install the package, but I also can install a updated package after the 2019/12/5?????

Why?
How I can set a filter to freeze all package version on a given date?

Regards,