This is interesting news. As many of you know, XD introduced some unique moves for Shadow Pokemon that aren't normally available, in some cases even today. This is the only game to get these Pokemon with these movesets from, and I assume you will be able to transfer them directly into HOME ala what Bank did with 3DS Virtual Console releases...
...Except that HOME doesn't allow you to transfer Pokemon with event moves anymore, they get reset upon transfer to your game of choice by wiping all existing moves and learning what the Pokemon would know at that level, just like as if you would encounter a wild Pokemon of the same species.
How are they going to handle this? I don't have faith in modern day Gamefreak, knowing them they will likely not update HOME and make these Pokemon essentially useless outside their home game or not even let you transfer them back to HOME and forcing them to be stuck in their game.
These ports came out way too late, the franchise is so beyond repair now that all I can think about is how they will ruin them, never mind that these games still work great on Dolphin.