Nom you don't lose anything.  Like I said, I kept my Bryce 5 and Bryce 5.5 versions installed when I installed Bryce 6 and I didn't lose anything.  Bryce 6 installs to it's own folder so I have my Bryce 5 folder from Corel, my Bryce 5.5 folder from DAZ and my Bryce 6 folder, also from DAZ, and I haven't had any problems at all.  This way I didn't have to move anything, I just imported from the appropriate folder.  I still have and use tons of presets from Bryce 4.

Hugz from Phoenix, USA

Victoria

Remember, sometimes the dragon wins. Correction: MOST times.