Dsiware won't play in English on cfw Japanese n3ds

My google-fu is whack and not turning up anyone with this specific problem.

For reference: I have a Japanese n3ds with luma cfw. I've successfully managed to get games running that are virtual console, gb and gba I injected using nsui, nds and 3ds I used godmode9 to convert into cia, all of them playing in english (both translation patches and official dumps) but this is the one thing/type of game that's throwing me through a loop: Dsiware only plays in Japanese. But more specifically, there's some odd things going on with logos regarding region changes... these are all USA versions of the .nds files, but depending on the game, there will be some English, only Japanese, titles under the icon before boot in Japanese but English graphical logo on boot, or the opposite. Sort of hard to explain, so here's specific examples.

X-Scape: Title before boot under icon reads "X-Scape" the USA title. But on boot, the graphic logo is "X-Returns," the Japanese title, and everything's in Japanese.
Art Style: Aquia: Title before boot under icon reads "Aquario", the Japanese title. But on boot, the graphic logo is the USA ver, "Aquia," there's an ESRB, and everything's in English.
Art Style: Box Life: Title before boot under icon reads "Hacolife," the Japanese title. But on boot, the graphic logo is the USA ver, "Box Life, there's an ESRB, but everything is in Japanese.

This weirdness is happening with all of the Art Style series, but it's not consistent in how it manifests. Additionally, "Base 10" had no option like the others to convert into cia using godmode9, so I tried a forwarder but it won't load at all. Note that I've used forwarders with success in every other case, but for DS games only.

I tried locale switching to no avail, and when I tried using the localeswitching frontend it doesn't even list titles for the dsiware to auto-switch for me. I tried both kinds of title IDs for manually doing locale.txt (I was confused on whether to use the ctr or twl ones from the 3Dbrew list, so I did both) but nothing.

What's going on here?