Instead of Trigger making rollbacking changes in form

Hi,

I created an instead of trigger on bom_inventory_components view. It inserts data into staging table after disable_date has been updated/inserted in form. But, after applying trigger on this view, the changes on form are rolled back. For example if I set disable_Date to sysdate and save the form, it rollsback the changes to previous date after applying this trigger. We are saving on bills form