Because nothing is uploaded, exporting is the only way to move saved research to another device or keep a copy.
What is included
Saved projects with their queries, notes and any cached records; bookmarks; collections; and your preferences.
Recent searches are deliberately excluded. A workspace export is a research artefact, not a browsing history, and bundling one into the other invites accidental disclosure.
Format
A single JSON file with a generation timestamp. It is readable, so you can see exactly what you are moving.