In our store we have products which are the same but available on different dates.

We also have items that are the same, but different sizes.

I would like to have a different listing for each, so entering all the same info over and over is time consuming.

In our old store, we can copy a product, and it opens the product in a new screen, and product title becomes "Copy of {product copied}".  This then allows us to easily edit the title and any other settings that need changing.