diego454 according to the Wiki on http://www.flyertalk.com/forum/qatar...l#post27158836 the availability of amenity kits is shown for the reported flights. There are still many flights that no one has reported on but the Wiki is the sum of knowledge that forum members have reported. Note that amenity kits are not available on all flights.

You will receive amenity kits on a per flight basis. No attention is paid to if you are are starting your journey or connection from another flight.