Utility at gijgo.com

I found a utility (http://gijgo.com) which is very helpful. However, there is a bug which I cannot solve and was wondering if you could help me.  I already contacted support but they have not responded so far.

The source code is at http://gijgo.com/grid/demos/html-sourced-data. When a new record is added,  a new ID number is generated. When I edit the new record, the updated record is provided with a new ID number. This seems to be a small bug but I cannot get it resolved.
Your help is appreciated.