What steps will reproduce the problem? 1. add a ation(ActionA) on the calendar 2. drag another action to the day which "ActionA" dues to

What is the expected output? What do you see instead? The calendar only shows the action which is draged to it just now but the previous action are gone whithout a refresh.

What version of the product are you using? On what operating system? personal edition 0.98

Please provide any additional information below. Browser:FireFox 3.6.4