Get your taxes done using TurboTax

Ok ...  if you did not file the extension with the same TT account the program doesn't know when or if you filed the extension and there is no way to tell the program that you did.   If you are sending this to another person then either tell them to ignore the date or print it out and make the correction yourself manually.  Since this info is for your use only  it really doesn't matter what is says.