Group Reports question

I have a question on how the "Group Reports" output is designed for Excel and another question.

Questions:
1. When i want to search for a list of users in specific groups i select those groups and the list of users will come up with their"Member of" groups but it shows ALL 'Member of" groups in the result field. I understand the list of names are those users that are part part of the search "Member of" groups but i do NOT need all the other groups i did not select. Any ideas?

2. When the report is exported and put into excel each "Member of ' group that i selected to search users by is set as tabs at the bottom of excel. Is this excel doing this or the ADManager reporting engine? I am not great with excel so i hope that is not it.