For this empty headings, Gem for OneNote adds a one-click function to convert all empty headings to normal paragraphs to help you recover this redundant headings.
Sometimes, we'll find that OneNote has some empty headings.
Maybe these headings we created unintentionally, or OneNote's reason, that have not the text of these headings.
These headings are something we don't want to see.
If you use the Navigation Pane or create a Table of Contents of Gem, you will find a lot of empty headings.
And we'll want to convert these empty headings to normal paragraphs.
In add-in Gem for OneNote, click “Edit” tab -> “Change” group -> “Paragraph” menu -> “Convert Empty Headings to Normal” menu item.
Gem will converts all empty headings in the current page as normal paragraphs.
Thus, if you use the Navigation Pane or Table of Contents again, and these blank headings won't appear again.