Reading the output stream from PoSh is a pain in the rear.

I would script the logins using TSQL instead:

SELECT 'CREATE LOGIN ' + QUOTENAME(name) + ' ' +

CASE type

WHEN 'S' THEN

'WITH PASSWORD = ' + CAST(CONVERT(varchar(256), CAST(LOGINPROPERTY(name,'PasswordHash') AS varbinary (256)), 1) AS nvarchar(max)) + ' HASHED ,

SID = ' + CAST(CONVERT(varchar(256), Sid, 1) AS nvarchar(max))

ELSE ' FROM WINDOWS '

END , type

FROM sys.server_principals

WHERE type IN ('S','U','G')

It may not be perfect, but it's a starting point.