Setting InfoPath promoted properties (boolean type) through SharePoint has no effect.

I have an InfoPath form that contains some boolean (true/false) fields that being promoted to list columns upon publishing. However when I updated those values through SharePoint starndard property page and then opened the form itself the changes are not reflected. After hours of digging, it turned out that InfoPath service can only handle boolean value as 1/0, instead of true/false or 1/0 by the InfoPath thick client. Once I forced all the boolean fields and corresponding controls in the InfoPath form to be 1/0 instead of true/false, everything works fine.