How to save only one of the channels?

I would like to save only one of the color channels, for example the magenta channel of my .tiff image. How do I do that? Every time I save my image I just get a grayscale image, even though I'm able to see the magenta channel just fine.

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  • One way you can do that is:

    • Image > convert to CMYK (if it is not already)
    • Adjust > tone curve
    • In the Active Channel dropdown:
      • select Cyan and pull the right side of the tone curve down to zero, so there is no cyan in the image
      • Repeat for yellow and again for black

    Now you should have just the magenta.

    [I'm doing this in PP X6, but I'm sure X5 will work the same]

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