How do you preserve the layers when saving as a pdf from Photoshop?
I know how to save as pdf but I have many layers I want to turn on / off when printing from the pdf but I can't find how to keep the multiple layers.
Either my search criteria is useless or I'm thicker than a blue whale's tongue as all my searches show "how to save as a pdf" which I know how but it flattens the image and doesn't preserve the layers.
Can anyone point me in the right direction?
Photoshop CS5

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