I don't know why your patch didn't migrate, but you should be able to copy it over. Here are a couple of threads that should help, but you'll need to find the paths to your patches and multisamples in Mac OS.
http://forum.cakewalk.com/Rapture-Pro-missing-samples-and-missing-entire-libraries-m3215901.aspx"The Dimension Pro and Rapture Factory banks that display in the user guide are the ones that install as part of the Legacy Content Packs. This is the same content that is included with stock Rapture and Dimension Pro installs (like you'd get with with SONAR Platinum), but organized using the Rapture Pro types.
The banks that display as "EXPANSION PACK: Dimension Pro (legacy)" are your migrated programs from your existing Dimension Pro and Rapture installations. This is useful if you have customized programs or expansion packs installed previously as those changed wouldn't be reflected in the stock content.
Of the factory content, only the Legacy packs will create new banks. All other packs are integrated into the Rapture Pro banks."
Also see:
http://forum.cakewalk.com/Rapture-vs-Rapture-Sessions-m3362440.aspx