I just had this happen to me.  Return was complete on one computer, status updated, etc.  But when I went to another computer on network, the return was blank.  Returning to the original computer, it was also blank.

I've started to use an external NAS device to store Lacerte files, instead of locally on one computer.  I think the client was open on both computers accidentally as I was completing it, and as a result, it failed to save.  There was no warning from Lacerte about a conflict, but I agree that there is no work there!

I'd suggest making sure the client is absolutely not open on more than one computer, especially if you're using a network storage device.