Hi Monymony,
Agreed, for that usage scenario there is a problem. It used to be direct date/time entry, but there were two problems with this approach - firstly the date entry fields are subject to interpretation when localised (i.e. month/day transposition) and secondly most exports people do are relatively short term exports - i.e. yesterday, last week, last month - the calendars are quicker for these types of date ranges which form the majority of the exports.
I'll look at the UI to see if there's anything we can do to improve it.
Cheers,
Stu.