Forum:Infernalqueen archfiend effect time limit

In Infernalqueen Archfiend's effect description, it says "as long as this card remains on the field, during each standby phase increase the ATK of 1 Archfiend monster by 1000 points" I have two questions regarding this;

1) If I activate book of moon on infernalqueen archfiend to flip her face-down, since she's still on the field does the attack boost stay

2) The ATK increasing effect doesn't state "until the end of the turn" or any time limit, so do the attack bonuses stay with my archfiends until Infernalqueen is destroyed?

Thanks ;)