I think the answer’s “no” but in case I misunderstood …
Can I add to or subtract from a mask I make in Nik Collection 9 ? E.g. if I select a luminosity range, and it includes the sky and a waterfall, can I get rid of the sky part to leave the waterfall, eg by brushing it away? I believe this is possible in PL, but I can’t see any way to do it in Nik.
(If it’s not possible it greatly reduces the value of the new Nik masking functions. I may as well save my money and continue to create masks in Photoshop).