i have the latest ios7 on my iphone 5s. i only noticed this recently that old events more than 1 year old are missing from ical once i am in list view (magnifying glass) but present on day/week/month view? On settings it is set to sync all events and events are present but not via list view. The reason this is annoying as month view is just dots which does not help if you have different coloured categories.
Its puzzling bth. With events showing when not in list view shows icloud is working but i don't get this?