Change datasource (unv->unx) and merged dimensions

Hi,

We have an old WebI-Report based on one unv-universe with lots of merged dimensions. Now we want to change all datasources to the new unx format, all objects are available. Unfortunately after changing the data source, all merged dimensions are gone and also the tables in the report lose their references to all dimensions.

We are on BI 4.1 SP2

Any ideas?

thanks!