Virtual Copy Needed--To Create B&W and Color Versions

I am doing almost all of my photo processing in Lightroom Mobile, quite often not using the desktop version at all. I am frustrated that I cannot duplicate an image in LR mobile so I can make both black and white and color versions of the same file. Copying to other collections does not work and for the life of me I cannot find any duplicate or virtual copy functionality in LR mobile. We need a way to non-destructively 'explore' where we want to take an image, and sometimes depending on where we share our work, both B&W versions of the same file are needed. Can we add the virtual copy functionality to LR mobile or at lease a 'duplicate' function or perhaps 'isolated collections'. It's seriously limiting not to be able to do both color and black and white versions.

Thanks!