How can I prevent animator tracks from

[safe token]

If I understand correctly. You've got Two (or more) Timelines with Animation Tracks. You'd like to have a Primary Timeline that animates something (eg the Camera) and then use a Control track to also play a sub-timeline that also animates the same Camera.

The issue is that due to the top-to-bottom evaluation and the fact we don't support additive animation tracks you will only see the bottom track's animations being written to your object in scene.

[next sapphire]

It’d be fine if it overrided what was animated instead of negating everything

[safe token]

You're on an old version so it's possible there is a bug there that's been fixed. I'll ask around if this sounds familiar to anyone.