If linked to the outline, the pages linked will guide me to the content I linked.
Example for current situation:
If I add one page before the content I wish to link on Document A, the current linked page will move to the next page from page 7 to page 8. And when I click on the link on Document B, it will still guide me to Document A, page 7. But the actual content has already moved to page 8 cause of adding a page.