Copying FFXML filter files from WINDOWS library folder to MAC library

I recently purchased copies of Filter Forge Professional 2 for my Windows and Mac systems. I initially downloaded all of the filters (FFXML files) through my Windows version of FFP2. Then I copied those FFXML files from the Windows library folder to my Mac FFP2 library folder (approximately 1,400 files). When I opened my Mac FFP2 app. none of the transplanted files (except for the ones that shipped with the original software application) appeared in the various sections within the interface.
Am I missing something or is it not possible to use the same FFXML files for both versions of FFP2? Is my only option to download filters directly through my Mac version of FFP? In advance, thank you for your responses to this post.

Thank you for your reply. Much appreciated.

Your solution has corrected the problem that I was having.
I didn't think that the FFXML files were platform-independent.

I mistakenly copied the FFXML files (on my Mac) to:
Applications\Filter Forge\Resources\System\Library.