Include Line Item Id in Zoho export feature

Include Line Item Id in Zoho export feature

Hi,

I'm exporting invoices via the Export button feature available in Zoho to a xls/csv file.
Unfortunately it seems the Line Item Id is not present in the available fields. I can export the Product Id of each line but not the unique ID linked to one product in one specific invoice.

I need it to be able to reconciliate and to update my analytics & dashboards.

Is there a way to include that field in the export ? Can you add it ? 
Thanks