Can you fix disposed of donated assets that have not been depreciated.

We have a non-profit customer who added 3 donated vehicles to their FA's through the FA Journal, not the FA G/L Journal. They posted the original transaction as a debit it to acquisition and credit to salvage value. No depreciation was entered. They disposed of the assets by selling them through the FA G/L Journal, without depreciating them, and now have large salvage value balances. They are using NAV 2009. The transactions cannot be cancelled or reversed due to the FA's already being sold. Is there any way to clean this up besides General Journal entries?