Since Tails 5.8 (December 2022), your data corresponding to each feature of the Persistent Storage is stored to the USB stick immediately. You don't have to restart Tails anymore after enabling a new feature.
For example, when you enable the Tor Browser Bookmarks feature of the Persistent Storage, your current bookmarks are saved in the Persistent Storage immediately.
<p>We are often asked to implement new features of the Persistent Storage: Tor Browser preferences, Tor configuration, desktop background, mouse and touchpad settings, and so on. See the [[!tails_gitlab groups/tails/-/issues?scope=all&utf8=✓&state=opened&label_name%5B%5D=C%3APersistence desc="list of issues about the Persistent Storage in our GitLab"]].<p>
When the Persistent Folder feature is turned on, you can save your personal files and working documents in the <span class="filename">Persistent</span> folder.
To open the <span class="filename">Persistent</span> folder, choose <span class="menuchoice"> <span class="guimenu">Places</span> ▸ <span class="guimenuitem">Persistent</span></span>.
*Tor Browser* can only access the *Tor Browser* subfolder in the *Persistent* folder. You can only save your downloads to the *Persistent/Tor Browser* folder. To upload a file, you must copy it to the *Persistent/Tor Browser* folder first.