lapasoa
msmcleod
Have you checked in C:\Cakewalk Content\SONAR Platinum\FX Chain Presets ?
You might have to copy them to:
C:\Cakewalk Content\Cakewalk Core\FX Chain Presets
What you suggest is not possible because Sonar content and CbB core content are the same.
What Mark means is you need to find the SONAR Platinum folder with the desired content, and then copy that over to the BandLab "Cakewalk Core" folder. Or you can point to the old location in Edit > Preferences > File > Folder Locations.
The FX Chains are not included with CbB, so you'll have to get them from SONAR, which did include them. As to FX Chains that were part of the monthly content, I don't know what's going to happen with them.