I have this FxCop build configuration which quite often (but not always) will show a very high number of new issues added and removed from the report, but in fact nothing or very little has changed since the previous report run, for example:
Total problems found: 19920 (+15853 -15853), errors: 2897 (+1459 -1459)
As you can see it is showing 15853 added to the report and a further 15853 removed from the same report, and yes, they are the same issues. I cannot see what is causing this problem and maybe someone else has seen this before?
In other words, why would the FxCop build configuration think that these issues are not the same as the ones from the previous report?