What are the major differences between these two releases of GRCM? Is there any document/link that talks about the differences?
I see that the user guide for ver 7.8 runs into more than 500 pages while for EGRCM is only 120. If this is taken as an indicator, has the functionality been reduced in the new release?
I would recommend checking out http://www.oracle.com/technetwork/documentation/grccs-096299.html and check out the 8.6.4 documentation for the user and implementation guide. I think this will give some insight on how to compare the 2.
I hope that helps.