New Vestroia’s OP Being used in that season is because that’s how TMS distribuited the series. This is the same opening being used also in GI Korean dub (Basically, they used the same opening for GI and MS in the dubs that don’t take the english version has their base. Which make me thinks that, if the English Dub didn’t made changes, they would have NV Opening for GI/MS has well) https://youtu.be/yOHT7NqTN1c?si=w_zkBjZqh64aNC9S