As I’m sure most of you have realized, there is a nasty bug in BillMinder 1.3.  We were so concerned about making sure the new database update didn’t hose existing data, that we overlooked an issue with some of the new UI elements.  This issue is a display issue only, so don’t worry about it saving the incorrect data you may be seeing.  It has been fixed and released to Apple, so hopefully it will be in your hands shortly.  In the meantime, a possible workaround would be to close and reopen the app each time you want to view a different bill.  We sincerely apologize for the inconvience.