There are no such things in GS7. You can duplicate all listings and have a new listings that you can start.
You can create a smart group to find specific listings. But please note, you can not delete listings from smart groups. You have to use the “Reveal Original” context menu command.
I have to ideas to track that:
Move all listings for one folder and you will see all relisted listings from one product.
Link the initial listing to an inventory item. All resisted listings will be in the “Listings Linked with this product” table.