Business Asset disposal - gain is not calculating correctly
I have a business asset that was destroyed in 2020 (fire). I entered the information in TT Business but it is showing I have a loss on the asset that was written off as Sect 179 in the year of purchase. This is my first year using TT Business so I feel like I have something entered wrong somewhere but when I look at the asset in the asset section it shows the asset has zero basis correctly. Where can I look to find the issue or should I just delete the disposal and re-enter?