RQM v4.0 Integration with Clear Quest

I'm in the process of looking at upgrading from RQM v3.0.1 (which is being used as a proof of concept on a current project) to RQM v4.0.  The thing I need to know with RQM v4.0 is that will it be easily integrated with Clear Quest?  I have reviewed the functionality that RQM v4.0 offers and it is very appealing and it appears to provide better tracking/reporting metrics, but I'm hesitant to switch if the new version is not easily connected with older rational programs like Clear Quest. 

The other issue that I'm concerned about is how RQM will work with Clear Quest.  I've tried to connect the two, but have not been able to due to administrative "tape."  I'm hoping that by connecting Clear Quest to RQM v4.0 I will have a robust application that will be able to track defects found during the testing process.

Any information that can be provided regarding the issues above will be greatly appreciated.

Thanks.