Nute burn

Hey guys a quick question for anyone at this point. I have 2 plants that have recently shown signs of nute burn. They are 18 in tall all just flipped to 12/12. The question I have is that about 5 to 7 leaves on the plant are showing the nute burn. I have flushed a few times and it seems that the burn has slowed or stopped all together at this point, but is this going to effect my yield or plant? should I cut off the hurt leaves or leave as is till they fall off?
 
all the new growth at the top is great, no burn showing, and plants are still growing at a pretty nice pace. would u continue to flush or just go back to my normal watering schedue?
 
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