That makes a lot of sense. For you to note, however, I never received this issue until I updated to CB 2.4.6.
Secondly, when I add menu item 1, as you mentioned, it does not change the functionality. It still does not work. The only way I can get the functionality to work is to create a Joomla menu and link directly to the URL generated by "menu 1"
So for now, even with the parent menu set to all groups, using the parameters
"Menu 2
Menu Item Type: Community Builder > Plugin
Plugin: CB GroupJive
Action: Group
ID: GROUP_ID_HERE"
Still has the SEF issue.
Own Your Own Community!