I've run into a bit of an issue with hiding individual collection pages in Squarespace 7.1. Normally, by clicking on the settings for a page, you are able to enable or disable that page. However with the new system of "Portfolio Collections" that page disable option does not exist for individual portfolio project pages. I may be mistaken, but as far as I can tell, there is no way to hide these pages (screenshots attached for reference).
This is incredibly troubling as you cannot create drafts of projects, nor if you are duplicating other projects, they will be live with duplicate content