Compatibility of mlcp Across MarkLogic Versions
Unless otherwise noted, mlcp is compatible with a wide range of MarkLogic versions. That is, you can usually use a recent version of mlcp with and older version of MarkLogic and vice versa. However, not all features of mlcp or MarkLogic will work across version boundaries.
For example, MarkLogic 9 and mlcp 9.0 include support for redacting documents as you export them. However, older versions of MarkLogic do not support this feature, so it is not possible to use the -redaction option of mlcp with older versions.
Similarly, you can use mlcp to export a database archive from MarkLogic 9 or later that includes documents with the node-update security capability. However, this capability did not exist in earlier versions of MarkLogic, so it cannot be preserved if you import the MarkLogic 9 archive into an older MarkLogic, and may even cause errors.
For best results, use the version of mlcp that corresponds to your version of MarkLogic, or limit your jobs to features you know are supported in both.