Define main objects for Drag & Relate between BW 3.1 and EP6

hi all.

We are trying to implement Drag & Relate between BW 3.1 and EP6.

We have 2 different BW reports based on the same object "0MATERIAL". One of them should be a source and the other is the target. When creating the iViews for these reports the "main object" property has no values, therefor we don't see any symbol near the object we want to drag. The import of the "0MATERIAL" object from BW to the portal was successful.

Is it related to customizing the BW system or the portal?

thanks,

Sagi