In the Affinity Photo Workbook, pg 122, I'm directed to apply a filter via the filter menu: Noise > Add Noise. I do, it's pretty, but my question is this: Is this a rare example of "destructive" editing, in that for me to change the noise factor I've added would involve going through a series of "undoing"? That is, there is no way for me to change the parms on the add noise, nor to eliminate it with a click, correct? This is apparently the nature of filters applied through the filter menu.