I upgraded to Windows 10 over Windows 7, but was having many strange issues with my audio drivers being dropped (Focusrite 18i20) and other problems, so I decided to do a clean install of Windows 10.  After reinstalling Sonar Platinum through Command Center, and getting everything running, I opened the last project I was working on and half of my plugins are missing.  I had been updating Sonar through X1 Producer, through X2, X3 and Platinum.  Can someone please tell me how to get my plugins back?  Do I need to reinstall X1 through X3?
Thanks.

There have been plug-ins discontinued through the X series. Here is a list http://forum.cakewalk.com/FindPost/3217211
 
All plug-ins may be reinstalled running the older versions of SONAR, selecting the Advanced install option and selecting the appropriate plug-ins from the picklists provided. The exception is V-Vocal, to get it back requires a minimal install of a version of SONAR which contains the plug-in.

Thanks scook.  Should that be done through Command Center or from the original files and discs?

original files and discs