Just transfer the save data from your Non hack switch to your hacked switch by using the system settings. Gotta warn you though, the save data from you non hack switch will be deleted afterwards.
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Nvm you need internet connection lol. You could try to host a lan connection and try that...
Well guys it's been some time that this game has been release. I made Intro Mod to add English Subtitles along with the Japanese Lyrics since Atlus were to lazy to add them when they brought it over to the west. (XD) I don't blame the though since they brought such a great game over to the 3ds...
Arm9loaderhax is already installed. Follow the "3ds guide" (google it) and go to the section A9LH to B9S. It should tell you the steps.
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Skip step 16 it's only for New 3ds users.
You have arm9hax installed so you should still be fine. Just update to boot9strap like normal. The reason you can only boot with a sd is because you have arm9hax install (one of the downsides of arm9hax).