I have this problem I'm going crazy.
I imported new configurable products, see them in admin enabled, assigned to the category, assigned to the site but in front-end not seen!!
I re-updated indexes using SSH, but no result.
Moreover, there is a way to prevent that any editing I must re-index all the products? can I reindex only upgraded products or only new products.. is not possible for a single change I have to re-index from the first product!
My catalog have 25k products, but solving this i need to import other products (total 100K)
If there is among you that an expert can solve the problem, I am willing to pay (possibly an affordable price)
Regards, Luca