OK I was told that the project that was uploaded, was not a current backup file. However, is it possible that you have a polygon background layer of maybe a Crop enterprise map that has the entire field boundary? If so, display that layer as the top Layer. left click on the map showing the entire field boundary. Right click and select Copy. From the Red Barn tab, right click on the Field Name (has the green patchwork icon). Right click and select Edit Boundaries. Be prepared, it may ask if you want to edit the enterprise map, you can answer yes or no here. Right click on the map displayed and select Delete. Right click on the Map-Editing screen and select Paste Addition. Click Save and Close. If this does not help please let me know.