Q:

When Capturing City-States do bonuses remain?

What I mean is do the City-States type bonuses (Extra Food, Religion, Culture, Special Luxuries, etc) remain with the city when captured.
So if I capture a Faith-based City-State with I gain the +2 Faith per turn the City-State had or are those Owner specific and not City specific?
Another Example: If I capture a City-State with porcelain, will I keep the porcelain once it's my city?

A:

Once you capture a City-State, it is no longer a City-State, and you do not receive the bonuses due to being a City-State's ally. So that bonus Faith, Culture, Food, etc. disappears entirely, and Porcelain and Jewelry also disappears. Only Mercantile City-States produce Porcelain or Jewelry, so it's treated like any other City-State bonus and it goes away. 
Once it's your city, it acts just like any other city you've captured, and it does not have any special bonuses.

