You are right, I just verified that the parameter name did change from 4.2 to 4.5. We strive to maintain backward compatibility and in this case I believe a change was made in the documentation that propogated to the interface descriptions. Back in 4.2 our developers were coding to the CORBA interfaces in which the interface names are not relevant. But, for SOAP it is relevant. The 4.5 release went through a fairly thorough screening to check for these types of issues but it looks like this one slipped through the cracks. I will verify that there are no other anomolies out there like this and let you know if I find any.
As for differences in the interfaces. We currently have no published set of differences outside of the release notes that specify on a high level what was added. That doesn't go down to the parameter level. In a perfect world, the interfaces should be completely backward compatible so this issue shouldn't arise.
-Joe
Nimbostratus