title: Qt designer does not update the gui
body: <p>Someone wrote out a GUI in Qt designer earlier and now I have to modify some small parts (i.e. add a button/functionality).</p>
  
  <p>Premise:
  I add the new feature/make any modification to the .ui file in Designer.
  I can go to edit mode and see that this makes changes to the xml format of the .ui file</p>
  
  <p>Problem:
  When I build and run Qt, the old version of the .ui is what is shown (without my feature upgrades).
  I tried cleaning everything and running qmake, but to no avail.</p>
  
  <p>Any ideas for why this could be happening?</p>