[Vtigercrm-developers] Updating Inventory records using record model clears off the lineitems

[nilay khatri]

Hi,

I am trying to update an Invoice using Record Model, somewhat like:

$invoiceRecordModel =
Vtiger_Record_Model::getInstanceById($vtigerInvoiceId);
$invoiceRecordModel->set('fieldname','fieldvalue');
$invoiceRecordModel->set('mode','edit');
$invoiceRecordModel->save();

But doing so removes all the lineitems. Any hints on how to update without
removing lineitems?
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