<LOL> Noooooo, you are not the only one, I'm just as bad!
Unfortunately FolderMarker can't help you with that.
However, since you made the icons exportable, have a look what the desktop.ini file says.
It probably refers to the icon by
so you could just copy one desktop.ini file and paste it in all the folders that already have the ico file. (would mean hitting ctrl+v a lot of times and provided the hidden icons díd get transferred)
If that doesn't help, we'd have to look at the software that copies things through computer-to-computer cables.
I have no experience with those, so I'm just shooting suggestions ...
Could you use for instance Freecommander to access them?
It gives you a nice side by side view of two folders and also displays hidden files.
Or you could try Cobian backup which is the only backup program I've come across so far that does copy ini files and the likes. It would be a hassle to set up the task within Cobian, but after you've done that Cobian would do the rest on it's own.
Edit: for adding the desktop.ini file by ctrl+v Freecommander would also be a good help. Makes navigating a lot easier.