Merge ok backend but not showing ok frontend

Hello, Just use the merge tool after importing additional products in Woo commerce that for some reasons had created -2 categories… Once merged, I can see the numbers adds up in Categories and I can see the the products once filtered by categories in Products section. The problem is in the front end, e.i.: Category: Motor Starter, slug: starter, is showing only 12 products and I have 32 in the back end ?? I deleted the Cache on site and broswer ?? Can somebody help? Thanks

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