My company currently uses two reporting tools for a data warehousing
project - Microsoft Reporting Services (RS) and Cognos ReportNet
(CRN). The new version of RS (2005) possesses an adhoc functionality
that previously separated the two tools. We have a 99% complete
ReportNet metadata layer and do not want to lose the work (nearly one
year) that was put into it. However, the cost of CRN greatly outweigh
RS's (nearly free - packaged with SQL Server).

I understand that it's technically possible to import the CRN metadata
into the RS Unified Dimensional Model (UDM) since both use an XML
interface.

Are there any articles/white papers, etc. that might speak to the
feasibility of doing so? What are the common difficulties that one
might face?

Our team is too small to continue with two similar reporting platforms
and a choice is likely to come by year's end. If we can largely save
our CRN metadata, I'd like some evidence to back it up and propose a
solution to my manager.

Thanks for your help!