Get your taxes done using TurboTax

I just nearly completed my federal return on my Mac so I clicked on state return and down loaded the Ca. state software.  When the down loaded completed I was asked if I wanted to import last years return, so I did that (with a .pdf file from last year).   I warned me that this would delete all date in the present return, but I assumed that meant the Ca. return (which had not data yet), and clicked ok.  Now all data from federal and state returns is gone! How can I get it back?