ToDoList — Task reminder problem

Hi there,

I noticed a problem when setting a Reminder to the task.
data-file I am working on. If I change any task, the file has to be saved. If I set Reminder to the task, the file need not to be saved. This means, that the Reminder time is not stored within the main data-file.

It cause a problem, when I share the main task data-file using Dropbox. If I set Reminder to some task in one computer, on the other computer all tasks are synchronized except the Reminder info.

Is it a bug or regular behaviour? Did somebody noticed it?

Thank you!