Unable to create an universe on a query based on a real time cube

Hello,

I'm trying to create a universe on a BEx query. This query is based on a multiprovider which consists of one standard cube and one real time cube. I'm unable to see this query in the designer. I do see an empty folder with the name of the multi provider.

I can create an universe directly on this multiprovider.

Are there any specific setting for real time cube or is it a compatibility issue? Can an universe be created on a real time cube?

Regards,

Sameer