You can move your source files to the Eclipse-based CodeWarrior IDE. I say source, because that's how I do the migration. In Eclipse, I create a project with the New Project wizard and then copy my source files into the Sources folder of the new project folder, and delete the placeholder main.c file.
There is a CodeWarrior project importer for importing Classic (non-Eclipse) CodeWarrior projects into the Eclipse IDE, but for any complex project its results are mixed. Your mileage may vary.
---Tom