properties: that concerns the opened item in the playlist (not the selected one, but opened)
export: that concerts the global project
But when you know how it works it’s okay; not a big deal.
That’s weird is that there’s no “link” from contextual menu of an item to the properties tab
Right clicking on a item in a list is the international way of having more options associated to this item. And item’s properties should be in this list IMHO, as it’s on the list in context menu of a clip in the timeline: