Related: https://tabsoutliner.userecho.com/communities/1/topics/561-converting-the-marvellous-suspender-saved-tabs

Related, this time for "The Marvellous S⁠⁠⁠⁠uspender":

https://tabsoutliner.userecho.com/communities/1/topics/561-converting-the-marvellous-suspender-saved-tabs

The OP here is about saving and removing the extension.

This and the previous message are about restoring something unfortunately saved with the extension.