applications/workeffort/servicedef/services_upgrade.xml

<?xml version="1.0" encoding="UTF-8" ?>
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<services xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="http://ofbiz.apache.org/dtds/services.xsd">
    <description>Order Services</description>
    <vendor>OFBiz</vendor>
    
    <service name="migrateWorkEffortContactMech" engine="simple"
            location="component://workeffort/minilang/workeffort/UpgradeServices.xml" invoke="migrateWorkEffortContactMech">
        <description>
            Migrate data from OldWorkEffortContactMech to WorkEffortContactMech.
            Since revision 827903 (2009-10-21) the entity OldWorkEffortContactMech has been deprecated.
            This service can be used to upgrade existing data from the OldWorkEffortContactMech entity to the new
            WorkEffortContactMech entity.
        </description>
    </service>
</services>