I use this produce daily. Love split function - makes processing more efficient.
The most recent update took away the feature to have more than 1 document open at a time. This has caused a tremendous slow down with processing.
To get around this, I combine the pdfs, delete the bookmarks, create a new bookmark for each document, then use the split feature under organize pages. This is more work than it should be.
Please fix this a.s.a.p.