You can’t delete a listing once it has been created.
What you have probably done, is to delete the SKU on your listing.
Doing this, will have absolutely no effect on the listing itself.

As to the brand, unless it matches exactly what your brand name is, on the listing itself and brand registry, you probably won’t be able to link the two together.
This is one of the drawbacks of listing prior to registration.

So for example, if you have the listing giving a brand of “Joe Bloggs” and your brand name is “Joseph Bloggs”, you probably won’t be able to change the listing to match.

Hi @ Managework,

Welcome to Amazon and to Seller Forums!

Below you can find more information regarding editing listing:

Register products to your brand

I believe that this instruction applies to your scenario:

" Certain attributes, such as product type and brand name, are non-editable once a listing is live. If you want to update a non-editable attribute, you must delete the listing, wait 24 hours and then create a new listing with the updated information."

Please let me know if this is the information you were looking for

Have a nice afternoon,

Julia.

Hi @ Smithe,

Thank you for coming back with the update

I can see that your case is still under review and it has been forwarded to a relevant department, which will help you to solve this issue.

I will keep an eye on your claim.

Please let me know whenever you receive more information from the Amazon agent.

Have a good day,

Julia.