How to import and use a mask created from relion

I remember that in former version, I can import a relion created mask file for the refinement in cryosparc, but V2 seems not working, I first use import 3D volume to import the mask.mrc, then try to use it for mask, but I can’t drop it to the mask placeholder, is something wrong I did?



When you imported the 3D volume, did you specify that it was a mask?


got it!
Thank you, safmas