I'm using a beforeSubmit UE script on a PO transaction, which has a client script attached that updates a field. The client script updates the field, but when the record is saved, scriptContext.newRecord.getValue('custbody_field_updated_by_client_script') returns a zero length string. Is this a known issue?

Is the field configured to store value? Do you know that the field value is updated because you can see it set in the UI? When you load the PO again, is the value present or is the field blank?

@Clay Roper Yes, the field has the value stored. The field is updated in the UI before save. The field is populated on PO reload. It's a long text field meant to hold a JSON string.