Unlinked parts move/disappear unintentionally in animation KS 3.3

[eyeD]

I'm working on an animation in Keyshot 3.3 with different unlinked parts.

When I try to make a change to part A (eg. change duration of an animation or edit a camera movement) an unlinked part B disappears or is translated.
Keyshot works with out problems for a while, but suddenly this problem starts to appear. I've experienced this problem before with an other animation project.

Does anyone know how to fix this?

Does anyone have the same problem?

[guest84672]

Can you please provide an example and send it to support@luxion.com.