Hi Julian, I now understand what you're looking for. Indeed it's odd how records get added to the audit / history tables. The good news is that there is a work around.

On your case you can create an Insert / Update OnAfter business rule in the change_request table and have a script like the following:

new GlideHistorySet("change_request", current.sys_id).generate();

That will make the trick

Thanks,

Berny