Migrate ocpasswords to passman

I recently migrated from OC to NC and wanted to migrate all my passwords from ocPasswords to passman. The app front page says it’s supported but does not say how to migrate.
I have access to the OC database, but the passwords are hashed there.
Any idea how to migrate them to passman?

A little bit late, but in case somebody else has the same question: There is an option in ocPasswords to export data (must be enabled by an admin) so you can download an unencrypted file which you can then import into passman.