title: SSIS Derived Column Missing Downstream
body: <p>I've created a derived column that translates a 1 to an 'M' and a 2 to 'F'.  i.e. a gender indicator.  The derived column feeds into a Fuzzy Lookup transformation and then to a conditional split.  The problem is the derived field does not show up in any of the downstream components.  In the Fuzzy Lookup transform the "Pass Through" checkbox is checked for the derived column, but in the following Conditional Split transform the column does not show up at all.  Funny thing is that the _Similarity_Gender_Derived does show up in the column list for the conditional split.</p>
  
  <p>Hopefully someone else has seen this type of behavior.</p>
  
  <p>Thanks - Mr. Do</p>