Ok, grab the .bin file for your region (in your case, it would be the one that Zoogie sent, but you need to change the .sav extension to .bin)
Put it in your Powersaves 3DS folder (in your computer).
Then put your OOT3D cart in the Powersaves, and make a backup of the current save you have (name doesn't matter, just make a backup).
Go to your Powersaves 3DS folder and copy the NAME of the backup you just made. Not the save itself, just the name of it. After that, delete the save.
Paste the name of the (just deleted) backup to your 2DSaver save. Close the Powersaves 3DS program and open it again. The backup save should be replaced with the 2DSaver save.
You can now restore the 2DSaver save to your cart.