1) Make a duplicate of the CodeWarrior project directory.
2) Open the project file (.mcp) in the duplicate directory.
3) Go to the project's settings panel. (Type ALT-F7.) Next, go to the Access Paths panel and ensure that there are no hard-coded directory paths in there. (For example, C:\DSP_Filters\FIR\sources.) There should only be project-relative paths present (for example, {Project}sources).
4) Choose Project > Reset Project Entry Paths
5) Choose Project > Re-search for Files.
That should clear out any directory info of the previous project.
---Tom