Should we create a new product listing or stick with the existing listing?

We currently have a product listed with an excellent rating (4.4 out of 5 stars, few dozen submissions). This is a private labeled commodity type product with our branding. Our brand is registered so we’re the only seller for this product.

We’ve had to switch suppliers and the new product will have slightly different dimensions but otherwise look identical. We can change the dimensions listed on the product listing and the product dimensions image.

So unless I’m missing something, it seems that the best option here is to stick with the existing product listing and just change the dimensions on the listing, correct? This way we don’t have to start from scratch in terms of our rating.

Am I missing anything?