Emu XL-7 & MP-7 User's Group

Hi i've just got my mp7 from ebay.
I'm using it in fact like a sound expander driven by cubase. So far away everything is 
working, i assign every midi track from cubase to the mp7 : track1 for kick, track2 for 
snare, track3 for hihats ..... I save the pattern and switch off the mp7. But when i come 
back and switch on the mp7, select my pattern... and the presets i've choosen are gone!!
I precise : i don't know how to edit presets so i keep the original ones: just select the patch 
and assign it to the track. It's kind of boring cause when i want to load a new song from 
cubase the machine dont play the sounds i've originally choosen. I need to retrieve all the 
presets. Can someone help me please?
I hope my explainations where understandable.
THX