Not support team but well, maybe can help
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When you make an animating and save a .chaos, it will save the whole animation, not a single frame. So when you save and open it, it will open the whole animation you just made.
Currently, there is no easy way to do what you want. I suggest opening 2 chaoticas side by side and replicating the exact parameters of the frame you want as a new non animated parameters.
PS: the .lyc saves the render in progress, not the parameters. You basically use it to be able to resume the render later on from the point where you stopped, not re-render it.