Many passwords are missing from my vault!

Hello Marc, and welcome to the community!

Did you put your passwords in to an org’s vault? Recent BW update “disappeared” org’s passwords that are not assigned to a collection, and can now only be accessed from the admin panel. The 3.1 web vault supposedly includes a tool ( Collections | Bitwarden Help Center ) to assign these passwords en masse into a collection.

(edited: You can only export unassigned org’s items from the web client.)