Multi provider on 2 DSO's one Std and other Write Opt

Hi ,

I am new to BW so please spare.

Am trying to create a Multi Provider on Dso 1 Standard and DSO 2 Write Optimized. I was able to drag and drop Key fig's and Chars in Multi Provider on 2 Cubes, it works fine and I was able to see data in that Multi Provider but it came twice that is  another question I want to ask.

But I was not able to drag and drop any Semantic Keys or Data fields into the Multi Provider.

I believe it is possible to do a Multi Pro on 2 different types of DSO's. They Keys are same as I copied an existing DSO and made it Write Optimized and the data exists in both the DSO's .

Please guide and advise.

Thanks

Krishna.