Note...if you've already paid the TTX fees, or registered the account, then you won't be able to Clear-and-start-over...you will be stuck with the upgrade.
But you should also note that if you have any sales of stocks, bonds, mutual funds on a form 1099-B/8949 to report, then you will be required to use Premier anyhow (at least for people using Online software)...............If that is what you meant by a sm(all?) security deduction....or loss due to the sale of some security......then you don't really have the option to fail reporting it...you must do so. Desktop software Deluxe would handle it, but Online Deluxe software will not.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*