Emergency Online access
Fixed passcode alone, no.
Fixed passcode and a token assigned ? Yes, token and fixed passcode will export/import.
Attempting to export a user who has only a fixed passcode, results in an export error:
Export Failed : Data that matches the specified criteria cannot be found.
If your reference was regarding a token that has a Emergency online Access enabled then export of user with tokens will also have the EOAC token status maintained and same EOAC works fine in the target deployment.
It may be for a fact that the user loses the associated user group membership from source deployment to target deployment. Note my testing was on user and groups in internal database.