key change only works for a few bars then reverts

[John Balich]

When I change the key signature midway through a piece, the new signature only last for one bar then reverts to original key signature 

[Kalle Rantaaho]

Perhaps there's the start of a new clip which includes its own  key definition. You can check in the Event list if there are  key changes where you don't want them.

Copy-pasting clips leaves  the original definitions in every pasted clip. Inserting a change in the beginning, doesn't affect the later clips.

(Then again, I would have thought key change doesn't behave that way, so maybe I'm wrong).