External issues doesn't use in since previous version report

Hello!
I use an empty quality profile with checkstyle report path (external issues).
All issues from checkstyle xml report display correctly, but I can’t use it in a quality gate, because of them not used in diff with previous project state:

https://user-images.githubusercontent.com/1610914/67640533-37a51400-f90c-11e9-9bc9-901d1479dfb6.png
was 0, now 2, but new issues are zero.

  • SonarQube Version: 7.9.0.26994

What am I doing wrong?

Hi,

I’m guessing your Checkstyle issues have been backdated to before the start of your New Code period. What’s the issue date (shown in the top-right corner of the issue box)?

Also, why wouldn’t you use at least the Sonar way rules?

 
Ann