Quit Turbotax without saving a new return (no save dialog box appeared)...do I have to start over?

Turbotax Premier 2019, Mac

 

I quit turbotax after doing a substantial amount of work expecting to see a save file dialog box, but none appeared.  I reopened the program and the work I had done is gone.  Is there a temp file somewhere I can recover, or do I have to start my return from step 1?