Was very pleased to check my v2 converted presets, many sounding practically identical in v3!
however, I think in the Chorus the Dry and Wet gain values have been reversed. I stumbled across one preset that sounded way wrong, and it was in the Chorus levels.
Here's images of the same patch in both v2&3.
[UPDATE] Other presets where Chorus is used have messed up gain values though not always directly reversed.