Application group member to metaverse

Hi

I have 3 MA :

• FIM
• AD
• Application #1

Im trying to add Application's #1 group membership to FIM thru a delimited text file. Basicly, the file look like : 

User / Group

My understanding is that the user's need be referenced object to be add has group members. Referenced object need to be in the same connector space has my Application #1 connector but I can't because users are from AD

• Users are from the AD. They have the same account name in the application. 
• Group need to be imported from Application #1 delimited textfile

Im trying to figure out a way to link all my applications access to a user. How would you do this ?

THANKS