#!/bin/bash
s='2|508|PNP|20-dec-2015 12:32:20|3451101|0|3xPirate Ship Cruise | CPT||0598
2|504|PNP|20-dec-2015 12:32:20|3451101|0|3xPirate Ship Cruise | CPT||0598
2|505|PNP|20-dec-2015 12:32:20|3451101|0|3xPirate Ship Cruise || CPT||0598
2|506|PNP|20-dec-2015 12:32:20|3451101|0|3xPirate Ship Cruise | |CPT||0598'
sed 's/|[ |]*//7' <<< "$s"