Is it possible that perhaps you edited the relevance of the group many times and the A000C computer reported to an earlier version of the automatic group?
I haven’t edit the relevance again for a month, I just run an action based on that relevance, but the result is not what I expect, so I made a new one with different name, run an action on it, and the result is correct
Is there anything else that can make the result gone wrong?
Nothing obviously jumps out at me… You might check out the file “Group XX.fxf” at “C:\Program Files\BigFix Enterprise\BES Client__BESData\actionsite” to see if the relevance is as you expect.
You can contact support and they can look at it in more detail if you would like.