Just a bit of advice: when you look at the properties of your ISO in Dolphin, there's the 4 character game code. If you translate that game code into hex, it becomes the name of the folder that the savegame is stored in. There's an incomplete database of these IDs on the wiibrew.org site, but looking them up from within Dolphin is easier imho.
When you rip your own ISO using the cIOS dumper, it defaults to saving the file as [gamecode].iso when you're doing a network transfer, although it's very very understandable if you prefer to save it as something a bit more human readable. ^_^ Also note that these gamecodes change based on the region of the game you had, so for example a save file for a PAL game will not (usually) work with the NTSC version of that game, even if you rename the folder. You'll need to get the proper version.
When you rip your own ISO using the cIOS dumper, it defaults to saving the file as [gamecode].iso when you're doing a network transfer, although it's very very understandable if you prefer to save it as something a bit more human readable. ^_^ Also note that these gamecodes change based on the region of the game you had, so for example a save file for a PAL game will not (usually) work with the NTSC version of that game, even if you rename the folder. You'll need to get the proper version.