On a 1040-x, line 18 is for a return you already received? if you never received a return do you put zero?

[emilyjohnmariana]

Line 18 on a 1040-x is for the amount of a refund you already received?

[Bsch4477]

If you were not due a refund then enter zero.  If you were due a refund wait until you get it before amending your return. 

[Critter-3]

Why are you incorrectly  amending a return BEFORE the original return has been fully processed and the original refund is in hand ???  

[emilyjohnmariana]

@Bsch4477 What happens if I already filed the amended return and had not yet received my refund?

[Critter-3]

Expect the amended return to delay the original return further and will test your patience to the limit.