Upgrades to BPCS® and ERP LX® vary in complexity depending on the version that is upgraded. Version BPCS® 4.005 and prior versions require a complete map rewrite because the files used for mapping are not the same.
Since the initial release of the Electronic Commerce Manager application (used to process inbound and outbound EDI data) at version 6.004, many new ECM adapters have been introduced. If new adapters are to be used, the complexity of the upgrade increases.
As with many software releases, an upgrade to the next release is much simpler.