I have found that if I export as default ICC Profile sRGB, no ICC profile is attached.
If I specify a custom profile of “sRGB Color Space Profile.icm” no ICC profile is attached.
If I create an ICC profile from an image exported from Nikon NX Studio and then export and specify this new profile as the custom profile, it is exported with the image.
I have no idea if exporting with this Nikon profile actually impacts the image, and therefore I do not consider it a good workaround.
Request: When exporting to jpeg with sRGB, allow the appropriate DXO ICC profile to be optionally attached to the image.