Can OmniGraffle export files in CMYK color space on MacOS?

I was trying to export a document in CMYK for printing. However, despite all colors in the files are set using CMYK, exported files (JPG/TIFF) are still in RGB color space, according to Finder’s information.

I could not find any options that specify color space during export, so I would like to know is this something that OmniGraffle support ?

I have an Omnigraffle chart I’ve been printing for almost 10 years. The colors no longer print correctly. Same printer for the last 6 years. I tried exporting to everything—PDF, jpg, PNG, you name it. If I take a picture of the screen with my iPhone, THEN print from Apple Photos, the colors are pretty close. That just doesn’t seem right.