ZBrushCentral

How to save stroke settings for spray stroke?

Is there a way to save the stroke settings for the spray stroke in Zbrush 4.0?
Take a clay brush and set its stroke to spray (or color spray) and change the placement to .08 and the flow to 0… save the brush, restart zbrush. The new clay brush will have the default settings (placement .5 and flow .25) for the spray stroke. Is this a bug?