In the Publication Style Maps section, go to the Utilities drop-down menu and select Import.
In the Style Map Import Editor window, click the Browse button to select the Style Map file to import.
Once the import file is selected, choose the Import File Type from the drop-down menu.
Click the Next button.
Give the imported Style Map a name (required) and description (optional). Match up the import file fields to the required Style Map fields through the drop down menus.
Select the Import button when finished and the new Style Map will be available to edit.
Click the OK button.
Click the Save button to finish. New style map can be selected from the Style Map Listing.
Note: This is also a convenient way to copy an existing Style Map and modify it as needed.