combine PDFs in preview app
Hello:
Occasionally there is a need to combine multiple PDF files into a single doc. This has been easily accomplished using the preview app, opening a PDF and then dragging additional files into the sidebar / thumbnails area. This functionality SEEMS to be broken in macOS Catalina ver 10.15 (19A583), preview ver 11.0 (998). When dragging new files into the sidebar / thumbnail area the files are not combined but simply opened as multiple documents within preview. This issue is also referenced in a reply to another preview app issue in the thread here:
https://discussions.apple.com/thread/250719196?answerId=251432330022#251432330022
Any help / suggestions would be appreciated. Thanks!
MacBook Pro 13", macOS 10.15