Remove a pack of 2 all keywords from your listing including backend search terms and wait at least 24 hours
If that’s the duration your issue is solved then that’s great but if results are opposite then you should open a case in your seller central ASAP and explain your issue along with your ASIN, Amazon seller support will solve this issue
Create new detail pages for new products or versions.
You must not use an existing listing for a new version of a product. This includes changes in color, size, material, features, and product name. Instead, create a new product detail page for each new version.
You want to open a case with Seller Support to have the listing changed back. While you are at it, you want to file a complaint against the seller that made the change in violation of the Product Detail Page Rules.