I use the 3ds.essh.co and then search file the title ID. Then once I find out what the game is I create a text file and a call it the same thing as the .sav file and then the name like this.
00040000000A0500.sav
00040000000A0500_Fire Emblem (U).txt
so that way on the SD card directory the text file lines up right below the save file and you can easily identify your active saves for backup or modification. Please GW demi-gods give us a save decrypt/encrypt tool soon so we can move saves.