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

at the moment i'm busy translating old tunes from cubase to the mp7 
for a live-set. i'm having problems with the interaction between the 
mp7 and my other gear. strange things are happening concerning my 
audity2000... if i change fx on the mp7 and save the pattern they're 
in... after coming back to that pattern my a2k automatically gets the 
same fx-setup as the mp7. i want the a2k to be able to receive prg. 
changes but not the fx. 
what i also would really want is to get a2k sysex-data into the mp7, 
but when i tried to record sysex from the a2k to the mp7, the mp7 
went bezerk... all patterns sounding very wrong... had to restore the 
factory multisetup and only after powering off 1 or 2 times 
it "behaved" itself again... does anybody know if there's a way to 
record sysex in the mp7?
another strange thing... i'm sure i made prg changes in 1 pattern 
yesterday, today i worked on another pattern, one moment i had to 
erase all kind of shit on all the tracks so i ruthlessly erased 
everything but the notes on all tracks (incl. prg changes)... then, 
after finishing the pattern, went back to yesterday's pattern to 
check and all prg changes were gone... don't know if it got something 
to do with what i was doing in the other pattern but i know this 
shouldn't be... anyone else lost prg changes or knows what i'm doing 
wrong here?

peter.