copying rule group - cannot see edit reference rule

Hi guyz,

Is there a way to copy a rule group in transformation?

I'm trying to do the steps in this document:

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/90754b76-bcf1-2a10-3ba7-b299b2be09f2?quicklink=index&overridelayout=true

However, I can't see the EDIT REFERENCE RULE screen..Is there a setting that I need to activate in order for that screen to appear?

NOTE:

I'm doing the steps above between DATASOURCE and DSO, NOT between DSO and CUBE (as stated in STEP 1).

Thank you!