Transferring layer masks to another Layer?

[tkarl__nn]

I recall that in Ps, I can readily copy and paste layer masks to another layer.  Can anyone do this in AP?  I can copy the layer, but not the just the mask.  Typically, I would be copying one adjustment filter's layer mask to another adjustment layer.

[firstdefence]

These are the things you can do by right clicking on the masks thumbnail

[carl123]

Select just the Adjustment Mask layer
Open the Channels Studio
Right click on the appropriate Adjustment Alpha and select Create Spare Channel

Select your new Adjustment Mask layer
Right click on the Spare Channel created above and select Load to "appropriate" Adjustment Alpha

[tkarl__nn]

OK, I wasn't clear enough, but I  re-did the work, so all is OK.  

Here's what happened:  I have an older Wedding with a LOT of processing done in Ps -- that I'd like to print.  I did all my Ps B&W conversions using the Ps "Channel Mixer".  Imagine my surprise when all those layers came up red in AP!  (I'm a new AP user).  Along with the unsupported Layer designation of Channel Mixer, I had done some masking so that some of the layer came through B&W, and some came through in color.  I tried everything to get that layer mask information off of the Ps Channel Mixer to no avail.  I got things mixed up thinking that AP couldn't copy and paste layer masks to other adjustment layers!

I just now re-did everything with AP's Black & White Adjustment layer, the additional masking was redone, and I'm happy (not to be paying $10/month!)