Combining pages from one project to another

Hi,
Suppose I have project A with 20 pages and Project B is an extension of Project A +10 pages. If I want to add the newly made 10 pages from project B to project A. Project A is not recognising the newly added 10 pages folders from client/src/app/"pages-folder" and meta/pages/"pages.json" both these folders were updated. Can you please guide me through this process.

Thanks