There is custom field in `quote_item` table same as `sales_order_item` both column name and type are same. 

I want to convert `quote_item` table to `sales_order_item` table. so I have used `fieldset.xml` to convert those data,

my fieldset.xml file is,

```
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:DataObject/etc/fieldset.xsd">
<scope id="global">
    <fieldset id="quote_convert_item">
        <field name="customcolumn1">
            <aspect name="to_order_item" />
        </field>
        <field name="customcolumn2">
            <aspect name="to_order_item" />
        </field>
    </fieldset>
</scope>
</config>

```

but its not working so strange