The first step is to open Assets & Liabilities tab and click + Asset or + Liability.
Select Type - Other, enter the Name of the adjustment and then the Account you want to edit.
Enter Adjustment as Purchase Date in the past and enter Value desired (For $0.00, enter as 0.01).
Click Save. When you return to the Asset and Liabilities page, the market value of the account now displays the adjusted value.
