Thanks for writing in!
1.) The actual pages and posts for Integrity demo 1 are only these;
All other pages of almost a hundred pages were used as sales page showcasing how the page will look like when it has a sidebar, fullwidth, shortcode demos, etc. Which page exactly you are trying to replicate? It might be included in the Starter Pack templates which is available when you enable it in the template Manager.
2.) Yes, you can save pages as templates and import it to other sites by utilizing the Templates Manager.
Please check out this knowledge base article:
- "Working with Templates" section in this page: https://theme.co/apex/forum/t/cornerstone-content-builder-layout/122/1
- Template Manager: https://theme.co/apex/forum/t/template-manager/20364/1
3.) The sliders in standard demo contents will not be included during the import. Only in the expanded demos where in you can have a 1-1 copy of the demo site. This has explained in detail in our knowledge base article:
To know how you can add your own Revolution Slider or LayerSlider into the site, please check this out:
Hope this helps.