I'm working on optimizing my product listings for specific keywords recommended by Amazon Tracker. Right now I'm only editing the Parent Product title, bullets & description. Is there any reason I should be editing the child products (variations). I only seem to see the Parent information when I search Amazon itself. So for example I have a Full Arm Sleeve and there are 111 variations. I'm only editing the Parent ASIN for this sleeve. Thank you very much for any advice anyone can provide.