Forms 1.0 vs Forms 2.0 Business Rule Run After Save

In FCCS Forms 1.0, when “Run After Save” is enabled in a business rule, saving the form first commits the data, and then the rule prompt appears. If the user cancels the prompt, the data still remains saved in the form. However, in Forms 2.0, if the prompt is canceled, the data does not save. Why is there a difference in behavior between Forms 1.0 and 2.0, and is there a setting that allows Forms 2.0 to work the same way as Forms 1.0? Thanks!