Infocube with dataset duplication

Hello,

we have some trouble with dataset duplication in an real-time Infocube and we have no idea what, why, and how it happened. We realized the duplication after we started an DTP (last time in july 2011) for updating some data (filter on 0CALYEAR). The last request in the real-time Infocube is from Dec 2010. We don't recognize any pattern or logic.

Is there a possibilty to find what has happened?

Thanks for any help.

Regards, Nicole