The refund process for the original return and the amended return run separately from each other.
If the original return showed that you would get a $1,500 refund, that refund is still coming to you.
If your amended return said $0, then this mean that you have zero difference in terms of tax due or refund from the original return.
The amended return is not an updated original return, it is a statement of the differences in the original return. If the amended return (1040X) says $0, then you will get no additional refund - but you will still get the original $1,500.
