From what I understand it doesn't really matter with what they open. Are the CC still working in game?
Yes it worked, all of my CCs in my Mods file were changed too.
You can try changing the setting at Control Panel > Default Programs > Set Associations
This might help with that:
https://support.microsoft.com/en-us/help/18539/windows-7-change-default-programs
But if the CC and Mods work I wouldn't worry too much about the icon.
mine do not work, they are all on notepad but it used to be a blank white icon and worked.
