VDV's wording is more accurate, I agree. We'll correct it...
7. It is forbidden to: redeem your dismissed heroes on the same day (i.e., use the "dismissal-redemption" trick);
it is also forbidden to buy heroes who died in battle (do not confuse with those who fled)!
Does he mean that heroes who died in battle also cannot be redeemed on THIS TURN, but can be redeemed on the NEXT turn? How will it be in your rules?