Hi,
How can you set the piano roll in Drum mode?
Open the properties dialog for the preset object assigned on the track, check the “use preset as drum kit”, answer yes to the message box to create a default drum map. Now any note sequences placed on the track will be opened in the drum editor.
Bounce tracks is a freeze function, isn’t it? Can you move the clips that are bounced?
Yes and yes. The next 2.06 release will feature improvements to the bounce system, so that the bounce feature by default functions just like the freeze feature as you know it from other hosts.
Can you highlight custom piano roll keys
No.