If you have marked an appraisal status as Lost Dead and wish to change the market appraisal status to professional you will need to follow the below steps.
On the property record, select the Appraisal tab. Select View next to the appraisal that you want to change.
On the Summary page select Won, untick Create Instruction Letter and Book Markup and Measure and click Save
Select to Revert to Carried out
You will see that the status is now Carried out which will allow you to mark the appraisal as professional