Keep variations together

I have checked: Hide variable products on archive page. So now only the variations are showing

If you have your shop product sorting system on category pages set on: newest products, the newest products/variations will be at the top of the page.
If a variable product has 5 variations made on 1-1-2000 and on 5-7-2024 you add a new variation, this new one is shown at the top of the category page. But the other older 5 variations will be somewhere down on the category page or even on a completely other category page.

I want them to stay together… How can this be done?

I do want to keep the shop product sorting system on category pages set on: newest products.
I can not change the making date of the new variation and I can not change the product ID.