there should be no reason you can't e-file. every desktop has the same forms. the only difference is that higher versions offer more guidance
if you made a valid MTM election, your gain/loss is ordinary income reported on form 4797 line 10.
these are the instructions from form 4797
Securities or Commodities Held by a Trader Who
Made a Mark-to-Market Election
Report on line 10 all gains and losses from sales and
dispositions of securities or commodities held in
connection with your trading business, including gains and
losses from marking to market securities and commodities
held at the end of the tax year (see
Traders Who Made a
Mark
to
Market Election, earlier). Attach to your tax return
a statement, using the same format as line 10, showing
the details of each transaction. Separately show and
identify securities or commodities held and marked to
market at the end of the year. On line 10, enter
“Trader—see attached” in column (a) and the totals from
the statement in columns (d), (f), and (g). Also, see the
instructions for line 1, earlier.
Now to be fair, when I worked for CPA firms (several) many years ago only a one-line entry was made. Details were never provided. the choice and risk, if you do the one=liner, is yours
