Hi all, I found solution of my problem with "None Found" message in list of Custom POIs (in my GPS Legend Cx, sw. 2.50)
It seems to be bug in Color schemes. I got this wrong message if I use Diamond, Emerald, Pearl, Sapphire and Topas scheme. If I switch to Amethyst, Aquamarine, Opal, Peridot or Ruby it's ok and I can see in "Custom POIs" list of all my POIs from all databases I imported.
I hope this'll help