There are 2 ways to find properties / disposals that you have archived:
1. Use the text search at the top of the disposal page
This cuts through any filters set and will bring you back properties that match your search
2. Use the Status filter to include the archived states
By updating this filter you will then be able to see all properties entered
Once you have found the property you can then either bring it back to an active state by updating its status or duplicating the property listing for a fresh start.