I appreciate the replies to my post.  I'll look into this more but I do not believe the properties were ever rented.  The originally preparer entered them as a rental.  Based on what I know, they have never been rented.  I'm going to follow IRonMan's suggestion for the time being and just place 12/31/20 in the date field in the disposition section.  It's all personal use, they really are not rental properties as you stated. 

Thank you again.