NEED TO PUBLISH FROM DEMANTRA TO ASCP ONLY NET-CHANGE

We have a quite obvious requirement  in our business that we need just to publish net change forecast only to ASCP for planning. Right now I see this functionality is not available in standard Demantra. It is confirmed in Bug 18110613.

I am thinking that if we customise the populate denorm table procedure to load just the incremental load of forecast from Demantra, we can save the time in publishing all records every time since the last run of analytical engine. Do you have any idea if we can customise and save it in custom workflow to load just the net change forecast into denorm table?