Change Type Question

If I change the type of a fixture to one with different or fewer parameters, when I change it back for the next show is all the original programming restored?

a basic example would be changing a scroller dimmer to a desk channel, is the colour programming preserved if i were to change it back?

i appreciate that's not the best example, you would simply only patch the intensity of the scroller dimmer, but I imagine the same principle would apply when changing from one type of moving profile fixture to another.
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