Earthbound Immortal Question?

If you replace your opponent’s Field Spell Card by activating one of your own, there is a face-up Field Spell Card continuously on the field, so any Earthbound Immortal on the field would not be destroyed. If you activate a new Field Spell Card, replacing your own Field Spell Card, there is a gap when no Field Spell Card is on the field, so any Earthbound Immortal would be destroyed.

-Official ruling

Field Spells are weird.

If you control the Field Spell, and you want to activate a new one, first, the old one must be destroyed, because 2 cards cannot occupy the same Card Zone, then the second one activates. In that time-frame, an Earthbound Immortal will destroy itself.

If your opponent controls a Field Spell, an you activate a new on over that, your Field Spell activates first, since it has a Card Zone to be placed in, then, since there can only be one active Field Spell, your opponent's Field Spell is destroyed. Since there was always a Field Spell present, no Earthbound can destroy itself.

it will be destroyed because when you replaced your field spell there is a gap so earthbound immortal is destroyed.

i think it wont be destroyed because you changed it, it wasnt destroyed