that's strange... u can always go to the old version and export each track TS 2 audio and then import on the new...
Maybe what U notice is a cleaner sound, but the older "dirtier" one just sounded better 2 ya (more humane/ organic).. ALso don't forget that yer ears should b formated 2 the old sound so it sound 2 clean now! :(
Maybe a little bit of valve/ overdrive can help!
Z