The daily partial crawl will add new pages as well as update the content for existing pages.
The partial crawl makes an effort to find new content and add it to your index. You can help this process by providing an up-to-date sitemap or RSS/Atom feed.
If you need to ensure that new content is added, there are a few things you can do:
Start a full recrawl of your site.
Use our API or the Swiftype Dashboard to request a URL be crawled.
Use our real-time indexing feature (available on the Enterprise plan) to add new content automatically.