# Half the Notebook Erased Itself

**URL:** <https://discourse.jupyter.org/t/half-the-notebook-erased-itself/18911>\
**Category:** JupyterLab\
**Tags:** jupyterlab\
**Created:** [April 11, 2023, 10:09am UTC](https://discourse.jupyter.org/t/half-the-notebook-erased-itself/18911 "2023-04-11T10:09:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![U-1SU2U](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/u-1su2u/32/9618_2.png) [@U-1SU2U](https://discourse.jupyter.org/u/U-1SU2U)\
**Post date:** [April 11, 2023, 10:09am UTC](https://discourse.jupyter.org/t/half-the-notebook-erased-itself/18911/1 "2023-04-11T10:09:02Z")

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So, today I had half my notebook erased from how it weas yesterday. Luckily I could retrieve it with the ‘Revert to’, but it was a big scare.

It was the middle part of the notebook, and the vanished sections still appeared in the index. Moreover, when trying to select the whole notebook with ‘shift+down arrow’ it stopped when it got to the cell where there was missing stufff. Maybe it was just a visual bug preventing cells from showing?