@TaxGuyBill 

If the loan has been used a *basis* to allow deducting prior losses, the subsequent repayment can become a taxable transaction.

@AlexBeaudry 

All entries dealing with this are in Screen 20.2, under *Sections* - Basis Limitations (7203).   You may have to do some overriding (Stock basis at beginning, loan balance at beginning, etc )if you are sure that the repayment is taxable.