I was just wondering is there a way of adding a filter to a Smart Object so that it's added at the bottom of the stack and not to first item?? I've tried all the normal key combinations, but none do what I'm looking for... the new filter is always added as the first item in the stack. Thanks - CES
Photoshop is going to apply the Smart Filters from the bottom up, so the result would be different based on the order in which they're applied, and consequently, the effect would be redrawn.
If you'd like them to not redraw, you could temporarily disable them by either clicking on the eyeball to the left of the Smart Filter or right-clicking on the Smart Filter and selecting Disable Smart Filter.