I cannot tell you how it happened, only how to fix it. This is a well tested section of the software that has not changed in years. In 10 years I have never seen such a problem when it was not caused by a bad import or user error. (Some times entered incorrectly and then trying to edit to change things will remember the first entity so is is best to delete and re-enter.)
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
