So, Fred, does that mean that you just dump the soil, immediately mix it with new soil, and immediately plant? Or do you let it sit for a few days or a week or so?
By the way, I am building a new raised bed (inside a box kit) for seedlings. I have been reading your older "seedling progress" threads with interest, and am going to try a variation on your materials (for a start, we don't have pine bark here) to fill my new bed.