Creating Multi Provider on 3 /CPMB/ Cube to generate Bex Reports

Hi

We have 3 cubes in BPC for a Sales & Revenue Planning.

Now we have a requirement, where we need to create a Report on the three BPC , /CPMB/ cubes.

Can I create a Multi provider on the three BPC Cubes and generate Bex Report on the Multiprovider?

If i do a full optimization, what will happen to the Multiprovider? because after full optimization the Technical name of the cubes get changed.

Looking forward to hear from you.

Thanks

Krish