title: InfoPath Drop Down list, loses data after trying to submit
body: <p>I have a question about my InfoPath Form:</p>
  
  <p>When I select a value from the first Drop Down list, the second one appears (it has a hide rule) and it has the values I configured in the InfoPath.</p>
  
  <p>But when I select a value from the first Drop Down list and do not click on the second one, I get an error!</p>
  
  <p>After this, I submit the form and the forms needs a value from the second Drop Down. So, after this message, I clicked in the second Drop Box, but all the values are gone.</p>
  
  <p>If I exit the form, and open it again, the forms loads OK and if I repeat the same actions, the data of the second Drop Down list disappears again.</p>