If you have the SP1 or SPA license, there is a perfect function to compare old and new versions of a part/model.

If you don't have it, I haven't found a better way to compare than the way you described.  I've never tried this, but it just popped into my head.  Maybe something using the interect boolean operation will give you some added material?!?

Gentlemen

1.  I have messed around with DMU and Clash, and did not get the results I wanted. That does not mean that the problem is Catia. Could be pilot error. I never got any training on clash. Just experiment and RTFM.

2. Vericut and autodiff is my favorite method to compare models, because you see VOLUMES, of added and removed material

3. The folks at Rand demo's some Kubotek software at the SOCAL RUG meeting, last month. That software is supposed to do this, among other things. I saw the demo, and thought, buying this software is a not brainer. but I have the brain, and the ball, but not the buck

4. There is a Webinar, on software that is supposed to do this TOMORROW

5. I am thinks this is a BP of DS, and I know RAND is a PB of DS

6. here are the details

Join us for a Webinar on October 9

Introductory session covering the details of Validation Tool, how it fits in the process, possible use case scenarios, and demonstration.

Title:   Validation Tool Date: Thursday, October 9, 2008 Time: 10:00 AM - 11:00 AM PDT

After registering you will receive a confirmation email containing information about joining the Webinar.

Space is limited.
Reserve your Webinar seat now at:
https://www2.gotomeeting.com/register/530076215