How Do You Take Advantage of 8.52 Dependent Bundle Features if Applied on an Earlier Tools Release?

It is a little unclear for me how the Release Adapter works.  Specifically, I am in the middle of applying Bundle 8 for HRMS 9.1 on PeopleTools 8.51. In turn, the Release Adapter appears to have stripped out the 8.52 related objects in order to import the project.  After I upgrade to 8.52, does bundle 8 need to be reapplied to take advantage of the 8.52 features in bundle 8? 

If so, I guess I am confused because this DocID seems to imply the 8.52 features will generate errors if they are accessed on a release other than 8.52:

 PeopleSoft HCM 9.1: HCM 9.1 Feature Pack 2 PeopleCode Compile Errors [ID 1373550.1]

Is it correct to assume that 8.52 bundle features will be available (after an upgrade to 8.52) if the bundle is applied on earlier Tools release?