Copy function

Please program the copy function of dates just as it is done in the windows version, i.e. a new add window opens and one is able to correct data and at the same time one is able to change the respective calendar.

This is important, if one has more than one calendar, e.g. one for preliminary and one for fixed dates and wants to depict these dates in different colours.

Even better would it be, if one could change the respective calendars of a date in the "edit-function", without copying, entering new and deleting the date in the first calendar.