The rule import feature has been enhanced to enable you to import multiple rules from another map and to specify how to handle duplicate rule numbers during the import. To use this feature, in the Rule Definitions window, select Rule | Import to open the Import Multiple Rules window. In the Import Rules Options section, you can:
Overwrite all duplicate rules
Skip all duplicate rules
Renumber all incoming duplicate rules
Overwrite, skip, or renumber rules on a rule-by-rule basis
For more information, see “Creating and using rules” in Chapter 20, “Working with Rules,” in the ECMAP User Guide.