We have several Purchase Order templates. I wanted to add "Ship Date" to the header portion of one of our PO templates. On the template I wanted, I selected the Formatting tab, selected Manage Templates, selected the template, and clicked Additional Customization.  I didn't see ship date as an option under the  header tab. So I tried "Due Date" and "Expected" by clicking them and seeing if I can use those fields since they are not currently being used. Suddenly, a "Received Status column" is now on my PO. I didn't select this. I when the the Column tab under the Additional Customization and the "Received Status column" is not a column on this template. So

1. how can I get rid of this "Received Status" column? 

2. I have a backup of my Quickbook file. So I exported the PO template from the backup and imported it to QB. However, how can I change all my past POs to use this template? I don't want to go to all my past POs and manually change the template. 

Thanks!