I am assuming you are referring to the date and time stamp for the actual Evernote note. From a different perspective, some people include text in their note that pertains to a specific date, along with with the attachment. Example - one of my relatives sent me a word doc with some info on her wedding. There was a typo in it which I corrected, but the wedding date did not change. A minor edit of an attachment would not warrant a change in the date for the entire note. If the revised date of the document is important, then Evernote Windows does permit the user to over-ride the creation date and time. Asking Evernote to figure out which date is more important (the note vs the attachment) would be a difficult (possibly impossible) task. I understand your point. As an alternate point of view, to my mind a modification, however small, is a modification, and if Evernote says it sorts by time modified, then to me a note in which the attachment has change, has been modified. If there is any convention in the world of applications, I would say that is it. For that matter, many systems keep a time stamp for time created and a separate one for time modified. Now, no doubt you have an opposing point of view, and clearly, Evernote does. To my mind, though, it would be more useful if the modification time changed when an attachment changes.