Elektron Musical Instruments

hi folks

this is my first post although ive been lurking here for nearly 2 years

my question is, do i need to save/backup all my kits, patterns etc 
before i send my MD off for a UW upgrade? does it come back in a 
factory restored condition, or will my stuff still be there?

also, when they do the upgrade, am i right in thinking the whole 
machine will come back with the latest OS installed?

im sending it off on monday so any replies would be much appreciated


cheers

mike