yeah i have the same problem coz before, with the old software, there was a sync now list and if you put songs on there and there deleted them off your computer then it wouldn't delete them off your
zune but i don't know what to do with the new software, i know that you can drag movies into your collection and then delete them off your computer and the movie won't be deleted but when i drag pictures and songs then although a sign shows that i can drop the files into the collection they never appear
Edit: i've just spent last 1/2 hour trying to get it sorted and what i do is cut and paste an album into my documents but not into my music folder, then drag and drop the album into the albums part of the device or collection part of the
zune software (for me artists on the left, then albums in middle with album art showing and then songs on right) sync it up and the album should go onto your
zune and then just delete the album from your documents and hey presto the album should stay on your zune.
tips: if you drag the album from a memory stick into your zune collection it will stay in your collection but skip when you try to sync it onto your zune
don't put album in my music folder because i'm quite sure it will delete of zune when you delete it
remember to drag and drop, nothing will/should happen (unless you have my documents as one of your default folders for which the zune software automatically checks for new files)
hope this helps, it worked for me
Merry Christmas and goodbye