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

[Patrick27029827to3e]

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?