Bulk load utilities and attributes
Bulk load utilities--that is, the scripts that import large sets of data into the database from comma-separated values (CSV) files--process attributes in the following manner:
If an attribute already exists for the attribute name that is being loaded, the utility uses the existing attribute and creates the corresponding attribute for the other object types. For example, if an array attribute named Criticality exists for an array, when the utility attempts to add an attribute with the same name, it will simply create the attribute for the remaining object types.