I have been using Chrome lately and also noticed there is no 'Save As' anymore. I've just been going back to Internet Explorer for these types of things. I don't know if Edge has that feature like IE does or not?
I am going to give Firefox a try as well, not sure what it does with these things?
Maybe someone will post instructions on how to do a 'Save As' in these other browsers, if it's possible.
Good luck.