Yep, that's how it works. The 1040SR is EXACTLY the same as the regular 1040 just bigger type so it prints on 3 pages instead of 2. They both use the same instructions and tax calculations
https://www.irs.gov/pub/irs-pdf/i1040gi.pdf
When you print it will print on the 1040SR even if you see only the 1040 on the screen. You automatically get the 1040SR if you or your spouse is 65 or older. In the Desktop program you can tell it which one to print.
