So, every time I do unwrap the texture disapear, and I have to click ‘texture’ again… but does not these two use different settings for unwrapping the texture? So if I do unwrap - it sets the good uvmapping, but when I anyway have to press ‘texture’ afterwards - does that not mess up by setting the default uvmapping again while texturing.? I don’t quite understand this
Hello Roger,
Unwrap is the first step of the texturing process. Therefore, if you change the UV map for your current model, you need to recalculate the texture. If you press the Texture button after the model is unwrapped, the texture is created with the existing unwrap. You can check the parameters of the created texture once you select the model in the 1Ds view in the Selected model(s) table.
If you press the Texture button without doing the unwrap first (or without existing UV map for your model), unwrap is created with the default parameters defined in the Reconstruction settings - Coloring/Texturing - Default unwrap parameters.
You can find more information in the application Help - Coloring and Texturing.
Ah thanks 
then I understand. I was afraid this default uv-mapping was done and overwriting my unwrap-work when pressing the ‘texture’ button. Then all is set and good 
Glad to hear that
As I mentioned previously, you can check the created unwrap and texture in the Selected model(s) table and make sure that the texture is created according to your needs.
Thanks, yes I see the stats. btw… I read that u-v mapping gets more efficient with many smaller textures than fewer large ones. Does this mean space-wise? or also that the texturing gets more correct?
Say is there a benefit in quality doing 80 x (8k x 8k) textures over making 20 x (16k x 16k) textures?