I'm sure a lot of people do use the CWAF tool, but I'm equally sure a lot of people don't!
Another - and possibly more reliable way - is to do a save as of ALL your projects (1 at a time I'm afraid) to a new location (saving all projects to a new folder is good) but you must ensure you've got "copy audio with projects" checked.
Once you've done this, you can safely delete the originals.
Just one caveat, depending on how many projects you've got - this can be very time consuming, but it works.