I'm a newbie, so this may be a stupid question. I downloaded the latest tax forms from the IRS in pdf form, and filled out all my tax information using preview. When I finished, I saved the form, but all the data I entered was lost. Can you not fill out pdf forms in preview? I did find a workaround. I filled in some data, then "printed" to a pdf file, and that saved all the entered data. Any insight into this issue? Thanks.