You can access details about previously sold vehicles by finding the current stock listing and opening it's profile page:
Then by scrolling down to the history section and then clicking on the icon on the righthand side of the history table:
This will then load the profile page for the previously sold vehicle:
If you click 'Links' you can then select the option to 'Download Images'. This will download a folder of the images you can then upload to the newest version in the same order.
The same can be done for the description by clicking Edit > Advertising > and copying the advert text.