Using Photoshop CC I have created an image with a very difficult multi point select tool (the polygon lasso tool), layer mask and box filter. Instead of redrawing the multi point selection again is there a way to duplicate just the mask and i know I can flip an individual layer horizontal before moving the image to the canvas. I tried and succeeded once but be damned if I can remember how i did it. I will need to repeat and flip a bunch of images so using this ability to quickly dup and flip a mask would be very helpful. Like I said I did it once already so I know it is possible. I have been trying again but have not stumbled upon it yet. If I do figure it out again I will gladly post it here.
Thanks for your time. Tom