Projecting Height maps, correct color space? How to set default to Raw?

What color space do you use when using projection to paint height maps?

I'm working with cloth maps to project detail onto the clothing, and everytime I add a new image to the projection tool it defaults to "auto - data signed normalized".

I think I do not want that setting, it clips the height values pretty bad. I want to use Raw, I believe. 

Do I need to manually change this setting each time, or is there a preference I can set?