Branch off chat without all previous messages (reverse branch off)

Currently it is only possible to branch off chat by copying all the messages before selected in a new one. It is not very useful in long threads when you are starting to hit context window limits.

It would be really nice to branch off “reversing” the direction of copied messages, so to speak. This way we can have fresh thread with a copy of messages from selected one onward, not backwards.

This would allow to copy all relevant context and continue chat approaching length limit