Ensure trailing newline in SCSS files

Hi, I’ve not much experience with Atom. I’m trying to preserve trailing empty newlines in SCSS files. Whitespace package is adding that newline, but Atom Beautify is deleting it immediately after.
I don’t found the way to tell to Atom beautify that don’t remove the trailing newline. There is a way to do it? or there is a way to perform Whitespace package AFTER Atom Beautify?
Thank you!