Bookmarks Automatically Changing to Include Number of Pages

[fionac60481540]

We recently updated to Adobe Acrobat Pro 2017, and I'm having trouble with the bookmarks.  Whenever I delete a page or insert a PDF, all of my bookmark names change.  Any bookmark with more than one page gets renamed to include the number of pages included in that bookmark.  So, if I had 30 bookmarks named "A," "B," "C," etc., and I delete a page, it changes the bookmark names to "A (3 pages)," "B (20 pages)," "C (15 pages)," etc.  This happens EVERY TIME, so even if I just delete them, if I add or delete a page after that, the bookmarks change again.  Is there any way to stop it?

[Bernd Alheit]

How do you delete or insert the pages?

[fionac60481540]

I'm using PDFlyer from CCH (the "Insert PDF" tool).  It looks like there's an "Insert from File" tool in Adobe that doesn't change the bookmarks, but I like the PDFlyer tool because it automatically inserts the entire PDF under the selected bookmark, and creates a bookmark for the inserted PDF using its document name.  It saves me time (vs. using "Insert from File," figuring out what page the current bookmark ends, and having to bookmark/title the new pages).

[Bernd Alheit]

This looks like a option of PDFlyer.