developer ID are not limited in clearcase.
So, we are used to use the standard pattern <firstname>_<lastname>
But when using changelog report, we got an empty developer activity report.
Looking at the source code, I see that the the arguments of the cleartool command generated force the maximum length of 8 characters.
In the class ClearCaseChangeLogCommand, line 114, we can see that the cleartool argument is :
I think it should be more like :