how to convert a pdf fill-in form to fixed content

[Josef Lowder]

.
Last year I used the IRS supplied pdf forms to prepare my tax returns. 
When I finished filling in the "fill-in" pdf forms, somehow, I converted 
each one to a new pdf form that had *fixed* data for printing out, 
emailing, etc.  But now I can't remember how I did that. 

How does one convert a pdf "fill-in" form to a fixed content pdf file?