It may be listed somewhere but I didn't realize the Chart Select map purchase is only good for a year then it will no longer showed in your account as a purchased map.
I purchased a map about 1 1/2 years ago that I wanted to bring into the Fishsmart app but when I would have to purchase the map again to be able to do that.
So .... just be aware of that and if you want to bring a map into Fishsmart ... or add layers, etc..... get it done before it expires.
Update .... Just found the 1 year limitation noted on page 20 of the Chart Select / FishSmart user manual.