I have both X2 and X3 on my PC. I have opened an X2 project in X3 and saved it in an X3 directory. The X2 project uses drum maps that I created in X2. In X3 file preferences, the drum map file is mapped to an X3 directory. When I examine the list of X2 drum maps, my custom drum maps are there. When I examine the list of X3 drum maps, my custom drum maps are no there. The project plays fine in X3, so the X2 drum maps are being used. However, these drum maps exist in the X2 environment and not in the X3 environment.
 
How can I migrate my custom drum maps from the X2 to the X3 environment, so that everything is "neat and tidy?"

Drum maps are stored in the cwp file. That is why the project plays in X3. To sync up the drum map presets you created in X2, use Windows to copy the files from the X2 location to the X3 location. The default location for drum map presets is "your user directory\AppData\Roaming\Cakewalk\Your Version of SONAR\Drum Maps". AppData is a hidden directory.