title: SSIS excel source now showing # instead of . in tab name
body: <p>I have an SSIS job that has been working for months and i have noticed it has error as cannot read the Spreadsheet.</p>
  
  <p>The spread sheet has 10 tabs on it and is in the same format as normal. tabs are named like so 0.1 , 0.2 , 0.3 , 04 ....</p>
  
  <p>However i have now noticed that the excel source recognises them now as 0#1 , 0#2 , 0#3 , 0#4 ....</p>
  
  <p>Has something recently changed?</p>