These more complicated issues are difficult to address without being face to face and looking at what you are seeing.
Based on your facts and comments, carryover losses and tax basis go hand in hand.
Having said that, you have indicated that you have no tax basis. If that is the case, your carryover losses are not deductible. So if they are not deductible, then you need to "uncheck" the at-risk box as noted earlier and you will not get any tax benefit. This is the correct handling based on the at-risk rules (no skin in the game then no deduction on the tax return).
Based on what you are presenting in your facts and responses, I believe the software is handling the situation correctly.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
