My understanding is also that these tracklists should be entered as-is. I interpret the Japanese guidelines as additionally applying to punctuation choices, since it’d be odd if capitalization were preserved for aesthetic reasons but punctuation weren’t. (I do usually update Japanese artists’ English titles to use Unicode single/double-quotes and apostrophes instead of the ASCII equivalents, though.)
Regarding pseudo-releases, I usually do the same as you and update them to follow the appropriate language guidelines and the ETI guidelines.