We are running into very strange problem very frequently, very recently.
We have individual InDesign documents paginated as Chapters/Articles, and when we create PS or Export PDF, everything looks fine. Whereas, when we create InDesign Book (to create Book or Issue), and the exported PDF has wrong Folio numbers and Running headers. Especially, the source document is absolutely correct even after book is created. It seems to me, very unreliable to have such a PDF. ie., duplicate of page numbers are appearing in the PDF.
At some point we re-save the files as IDML, and it solves for some times but not all the time. Please advise how to solve this issue.