Hi Jeremias!
The more relevant changesin the new stable-2401 are explained here:
There will be more and deeper changes in the next chain_manager release, so probably you will need to refactor partially your highly customized snapshots. Basically we have removed the “clone” option because we allow having several synth chains in the same MIDI channel. There is a new type of chain, “MIDI+AUDIO” that can be used to route MIDI to several layered chains and then route the audio back to a “group” fader that controls volume of the mix of layered sounds. I think improves quite a bit the current behaviour. All this is in the chain_manager branch, that will be in testing very very soon.
All the best!