Version:            (using KDE KDE 3.1.1)
Installed from:    SuSE RPMs

I'm a new user to KMail.  I didn't know how to mark the whole folder as read, so I selected all the messages in the folder, right clicked on a message in the list and selected, "Mark message as read."  It worked of course, but it also removed the "replied to" status from everything.  I thought "no problem...I'll just undo it."

Currently the undo function is completely oblivious to these changes.  The undo function should store changes to message flags done through the menu (actually clicking "mark as read").  It should also undo changes in a batch when they were done in a batch.