I have imported products from csv file that was based on exported file, so all fields I expect should be correct.

The products came through nicely, no errors showing. However, I had to change the descriptions a little bit and after I have done that and hit save, the product disappears from the front side.
Adding images did not affect it - I added some images and product was still visible.

But as soon as I changed something in the blurb or description, the product from the front side is no longer showing.
I have tested different fields and seems like I can't edit anything under General, adding keywords or categories makes the product disappear.

I have tried clearing cache, cloning the product, removing all products and importing again - still does the same thing

Can anyone help please ?

Thanks