If you have pokemon you regret having a japanese name (other than starters or leggies) just catch new ones! just use exp cheats to get it on the right lvl again it's not a sin if you have a good reason
Eh, hey guys, hope some of you remember me from the HG-SS translation chat
Anyway, I patched my game and all items and pokemon names are still japanese, only type icons, the logo and the text under the logo are actually translated.
What went wrong?
To people who have incompatible save states, patch your game with a previously v2 patched rom, that solved it for me, and it keeps the anti-piracy patching aswell.
Keep a back up of the unpatched version in case it fails for you