Gramdcalibur/Cuttlebug

Can anyone tell me if I can use the origianal metal backed Cuttlebug cutting dies (I have alphabets) in my new Grand Calibur machine.  I have purchased the raspberry adapter plate, but no mention is ever made of these metal backed dies being used,  They were very expensive amd I don't thinkl spellbinders do alphabets.   I would like to use them with my new machine.  Has anyone any experience please.