Very much appreciate the response. For the sake of others that may be trying to do the same thing, what I discovered is that if you copy the tax year's program files (from the ...x86... directory) from the previous computer onto your new computer (after you install the base program on your new computer - to make the relevant registry entries), you can open your tax file on the new computer and then also trace the calculations as you would have been able to as if you were running the old computer. This obviously requires some level of access to either your old computer or someone who filed in the specific states you filed, but I thought it was worth sharing that learning - probably obvious, but wasn't the first thing I thought of.
