One strategry is to simply avoid rejoining them and parse
on the |. That way newlines wouldn't matter. You can try
changing the field seperator and see if it doesn't take care
of this all for you, or you could use split or a regex across
multiple lines not taking into account the \n character to
grab your fields.
It appears as though you are going 4 fields to a record with
the field seperator of '|'.