If you set your "remove pages" page range, it automatically updates the "replace with" page range to match the number of pages. I would also like it to work in reverse. If you set your "replace with" page range, I would like it to update the "remove pages" page range for the number of pages. It is a minor inconvenience to calculate the last page of the range for large PDFs. If you get it wrong, it throws an error that the ranges don't match. It can only be one value, why not autofill it? Thank you.