OCMOD changes in twig file not showing

[riteshjha]

OC Version: 2.3.0.2 and Ajax Quick Checkout 6.6.5.
I made changes in cart.tpl file using OCMOD modification but changes is not showing. When i check the modification folder inside system/storage it is modified and the added field is there but it is not showing.

Here is my code for changes

<file path="catalog/view/theme/default/template/d_quickcheckout/cart.twig">
    <operation>
        <search><![CDATA[<div class=" form-group qc-coupon <%= parseInt(model.config.option.coupon.display) ? '' : 'hidden' %>">]]></search>
        <add position="before"><![CDATA[
            <div class="form-group qc-mgmt">
                <label class="col-sm-4 control-label">Extra Field:</label>
                <div class="col-sm-8">
                    <div class="input-group">
                        <input type="text" value=""/>
                    </div>
                </div>
            </div>
        ]]></add>
    </operation>
</file>