Data automatically removed while using Field Data Edit script

Hi ,

Last updated field value is getting cleared automatically during new
document creation however the same is not true for existing document
updates wherein the field updates are successfully saved if a save
statement is used on Field Data Edit script.

We are using below statement on Field data edit script for automatically
saving a document (without pressing save button) on specific field
change.

doc.getIBeanHomeIfc().upgradeToEdit(doc);
doc.getIBeanHomeIfc().save(doc);

Please assist. Our system details below;

ESO Version :10.0.06

use below script on any field in Field Data Edit script

doc.getIBeanHomeIfc().upgradeToEdit(doc);
doc.getIBeanHomeIfc().save(doc);