@JRG26
"What I would like to do is zero out the items that I know are disposed of or sold.
It seems like I may be able to zero them all out and add back in the assets that I know he still has."
It's not that simple. There is depreciation that needs to be taken into account. You can't just offset them with current fixed assets because there are offsetting entries that need to be entered to offset the current fixed asset (cash if paid for or loan liability if financed). When an asset is sold, there should be a deposit if sold for cash or a note receivable if financed and that, along with the original cost and accumulated depreciation, determines gain/loss. You close them out by removing the asset (credit), closing accumulated depreciation (debit), recording the sale price of the asset (cash or note receivable if financed - debit) and recording the difference to gain/loss (credit/debit). If they were disposed of, then you need to do the same but there is no recording of the sale price and the difference goes to loss or, if fully depreciated, then the fixed asset is closed against accumulated depreciation and there's no gain/loss.
