Directory Plugin and Buddypress Multi Site Install Issue

I have a multi site install with buddypress, and a number of mapped domains. Upon previous suggestion, I have deactivated the network directory plugin and activated it by individual mapped domain. When a user goes to add a listing, they get a 404 error page because it defaults to the main site install with buddypress (even though it has only been activated on the mapped domain).

I need help in getting a better understanding on how to use the directory plugin in a multi site install with buddypress. What is the best way to configure this installation?

Thanks in advance.