Pull mirror: issues

Hi, I’m asking this here because I couldn’t find an answer on the documentation. I imported a project from GitHub and it went all good, all the code, issues and pull requests were imported correctly.

I then set it up as a pull mirror from the GitHub repository which seemed to work fine with the code, but no issues or pull requests were updated. Is that an expected behaviour or do I have to do something else to keep those udpated?

My references: