"generic to brand"

As @Seller_rI7BZIczK8iACnotes, the answer is NO!

According to multiple posts from Amazon MODS it can't be done.

Start with this one from several weeks ago (as of 07/17/2023).

":What is the impact in enrolling in brand registry after listing your first product?"

In it @Sandy_Amazon stated quite clearly:

"Hello @bigbundytime

@C_W_Bt is correct that sellers will have to create new ASINs.

Please see the help page and look at the details under Policies for editing detail pages.

If you choose to re-brand a product you must create a new ASIN rather than update an existing ASIN. This is true even if the product is unbranded and does not change materially after the brand change. This includes adding a brand to a previously unbranded product. (emphasis added).

If you get lots of positive feedback on your generic listing, it could be damaging to delete and erase back to your trademarked ASIN, but this is a decision for you to make as you know your business and product the best.

If you have any additional questions please let me know.

Best,

Sandy"

"will it negatively impact the health of my Seller Central account?"

And, as usual, @Seller_rI7BZIczK8iACis correct it won't. HOWEVER, if you have any reviews (actual reviews, not feedback) those will not transfer over and will be lost if you delete the ASIN.

Also, to ensure that the 'generic' ASIN is actually GONE from the system you need to go further than just hitting 'delete' on your inventory. Just clicking 'delete' still leaves it in the Amazon system and at some point another seller could find it and list against the 'dead' item!

HOW TO PERMANENTLY REMOVE AN ASIN

https://sellercentral.amazon.com/help/hub/reference/G201576560

Delete SKUs Using Inventory Loader

You can use the Inventory Loader to delete SKUs from your inventory. Deleting SKUs is different from deleting offerings. Product detail pages are created based on input from many sellers. Using the Inventory Loader to delete SKUs will remove your contributions to the descriptive product attributes that are rendered on product detail pages. This enables you to manage the item data associated with specific SKUs.

Delete both your offers and item data contributions.

Enter an "x" in the add-delete field in your Inventory Loader file. This will completely remove all data associated with your SKU.

Deactivate your offers without deleting item data contributions.

Enter a "d" in the add-delete field in your Inventory Loader file. When you delete offers by entering a "d" in the add-delete field, it sets your inventory for the SKUs to "0". This will make those listings show as inactive.

If you submitted a category-specific inventory file originally and want to use an Inventory Loader file to delete SKUs or make other changes to your listings, you can modify an Active Listings Report. See Use Reports to Update Inventory

Reuse of SKUs

• In general, we discourage reusing SKUs for different products. Each SKU should have a one-to-one relationship with a unique ASIN.

• Assign a new SKU to each new product being sold. This will maintain previous item data contributions that are associated with a specific SKU.

• If you do reuse a SKU, first delete the active ASIN data or you will receive an error message. To remove old associations before reusing a SKU, enter an "x" in your Inventory Loader file. This is important for sellers who routinely reuse SKUs to associate previous SKUs with new ASINs.

SIDE NOTE and personal opinion - I suspect it wouldn’t help anyway because I doubt the lawyers would ever allow complete removal of the information due to legal liabilities at some point –