Modify all bookmarks at once
When using the "Combine Files" tool, we should be able to modify all bookmarks at once, without changing the destination of the bookmarks. For example when navigating the pages using the bookmarks, the files will open in a "Fit Width" view, unless individually modified to use "Fit Page."
I would like all documents to be viewed at "Fit Page" when using the bookmarks after combining the files, but I can only modify them individually, which is very tedious.
We are delighted to share with you that Acrobat and Reader Desktop release for DC Continuous (20.012.20041) is Live now and this takes care of this Feature Request
For more Info refer here : https://helpx.adobe.com/acrobat/using/whats-new.html
The Set Default Bookmark Zoom Level menu item is now added to the PDF bookmark options. While creating a new bookmark, you can easily use this option to set the default zoom level. By default, the Inherit Zoom option is selected.
Also, Acrobat now provides an option in the bookmark properties to retain the destination page number when you adjust the zoom level of multiple bookmarks.
Please update your Acrobat (It should Auto update or you should do Help → Check for updates) and let us know your Feedback.