Feedback does NOT work.  I've been complaining for 20 years for something QB broke on a new version way back and never fixed it.  Its a critical issue; randomly QB replaces a part number on a SO from another number somewhere else in the document.   We have tested it and its when you leave the curser in that field and leave to a webpage to copy another part number.  When you come back to QB, one of the many lines items will be changed.  Typically its the first line, but not always.