BizTalk Performance counters disappear after in-place upgrade of BizTalk 2010 to BizTalk 2013

During in-place upgrade of BizTalk 2010 to BizTalk 2013, we have seen performance counters disappear, especially the BizTalk:Message Agent and BizTalk:Messaging counters.

I've been running a MS support case, and Microsoft confirms the issue (this issue might even be present in BizTalk Server 2013 R2).

Inspired by:

• http://blogs.msdn.com/b/biztalkperformance/archive/2007/09/30/how-to-manually-recreate-missing-biztalk-performance-counters.aspx    
• http://blogs.msdn.com/b/biztalkcpr/archive/2010/06/23/have-you-manually-recreated-the-biztalk-performance-counter-using-the-following-link-but-some-of-the-counters-were-still-missing.aspx

I’ve made this script that fixes the issue: