If by rareballs, you mean the special balls that Kurt makes in HeartGold and SoulSilver, then I should let you know that it's illegal to have a Kurtball/Apricornball/Rareball HA Pokémon, because Hidden Abilities didn't exist in the 4th generation games.
So it's safe to say that your HA Loveball Shuckle and HA Loveball Eevee are hacked, regardless if you bred it to pass down the ability and the pokéball to the egglings.