I do not know of any password manager that allows the export (or import) of data from another, and that includes those in web browsers.
You'd have to unencrypt the contents to allow that transfer across managers, and for security reasons that's just not done.
Brian - Windows 10 Pro, 64-Bit, Version 20H2, Build 19042
One does not discover new lands without consenting to lose sight of the shore for a very long time.
~ André Gide