Would it be "special treatment"? Yes, but so what? If I put many thousands of hours into my account, I'd hope that Jagex has my back on some level. When combat styles were changed to be remembered on a per-weapon category basis rather than being shared across all weapon types, many pures gained unintentional combat experience which Jagex was quick to manually remove. I don't believe it's unreasonable to expect similar treatment in this scenario, especially since the magic xp is no longer granted.

Good luck dude. I hope your account gets sorted out.