LOL. Santa is busy with Kids list:)
Zenon,
Same issue might occur even in the popup while pre-filling location if you have 10 deliveries. Just a thought, you can use Expected events which are not reported, sort them by EE date and pickup the location of the first UNREPORTED expected event and populate location on event in pre-processing or custom dynpro, whichever way you choose to do it.
Like fist delivery reports to first EE, second delivery reports to second EE and so on.
This logic holds good only if your event is an expected event and your delivery EE are in sequence ( based on stages/stops/route).
Regards,
Vishnu