Gundam Heavyarms the Neuronoid: Super Robot Wars Compact 3 glitch

Had a bizarre bug happen where Shou Yanagi from Betterman somehow ended up as a subpilot for Gundam Heavyarms alongside Heero. He actually has battle dialog for some reason. If him and his neuronoid are both deployed, the result is two independent copies that don't share SP. He's also shown as being in Heavyarms during dialog on the map - if both are present, whatever's selected first will take priority. Unsure how this happened. I had him in the Kakuseijin alongside Sakura rather than his default Tyran with Kaede when they got upgraded to three-seaters and the pilots were rearranged. I was noticing strange effects at the time like Keita not visually being in the Tyran when I changed things back.