H Jeff,
The next time I go into raw refine on the same image, the white balance has been reset to 0, ........... Why won't my white balance setting stick?
The WB setting does "stick", it's just that the slider is re-set to zero next time Refine is used. That's the way it works.
If you take a WB setting from the image, the slider does not move at all and that sticks too.
When WB has been set, red lines appear either side of the WB dropper button. See screen shot attached.
Also, if you select and middle mouse button click the thumbnail, raw refine information is displayed with the image.
To check out what I say and convince yourself, set the WB slider to an extreme so the change is very obvious and save. Open refine again, the slider will be zero but the image will the appearance you would expect with the WB way off.
Right click the WB dropper button to clear the setting completely.
There is an Auto WB (AWB) tick box on the refine controls too.
I generally prefer to have my camera set to the appropriate ambient conditions, daylight, cloudy etc., and use the dropper on an image to set WB. In fact I use a mini colour checker card and photograph that to enable setting WB for a batch of images. If conditions are changeable, I may take several shots of the chart.
Terry