Same here. Switch from 7.4 to 8.0 and it causes a Fatal error and brings down to the site.
Thanks for checking and your support.
I made a few changes to the file, added the parent sku to variations, removed the attributes from the variations and now everything importing just fine.
THANKS THANK THANKS 😀
Can I send you somehow a message or an email?
Than I am happy to share my website link with you. And I am just using the Variable Product.
You got it right, the Cart button is not gone if the variation is out of stock.
If you click on the add to cart button a window pops up:
Sorry, this product is unavailable. Please choose a different combination.