I ask because usually hu is two sounds, so it would be transliterated as two letters. If you mean it used to be hü, then yes, you'd lose the umlauts in the tran

I ask because usually hu is two sounds, so it would be transliterated as two letters. If you mean it used to be hü, then yes, you'd lose the umlauts in the transliteration, and it would just become "χου", with a hard h, not an aspirated one.