> For the complete documentation index, see [llms.txt](https://learn.squirrel365.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.squirrel365.io/frequent-questions.md).

# Frequent Questions

- [What data do you keep and for how long?](https://learn.squirrel365.io/frequent-questions/what-data-do-you-keep-and-for-how-long.md)
- [Changes to Grouping in v1.18](https://learn.squirrel365.io/frequent-questions/changes-to-grouping-in-v1.18.md): This article describes the changes to groups and grouping in version 1.18 and how this can affect existing projects.