InfoPath Dev

There is a strange behavior that users are experiencing with InfoPath.
Just recently, I added a new option to multi-selection field that's not required, but after I publish it to SharePoint and a day goes by, the field becomes required. I can’t figure out why that happens.
Does anyone you know why this happens?

That's odd. Can I see your form? You can attach it under the options tab... is the field now required in new & existing forms?

Sorry for the late response. We may have found the issue. We think the SharePoint list is not syncing up somehow. So, we are going to try making changes in the list first and then open it in infoPath and then publish it. Before I would open the list in InfoPath first, make my changes and then publish. The change is really minor. All I do is add or remove a value from a multi-select control. If that does not work, I will see if I can post the form here so you can take a look. Thanks!