Wii content missing after system transfer
Some downloadable content cannot be transferred from one system to another. If this is the case, a message will appear during the transfer process.
Even if content cannot be transferred to your Wii U, you can still enjoy it on your Wii system.
Downloading content onto your Wii U
After your system transfer you may find that you need to download content again from Nintendo eShop.
If the content is chargeable, it will not cost you to download it again as it will be linked to your account.