If the IMF no longer uses the in transition group it must mean that they feel it no longer reflects a significant economic difference  To see if this is true I have plotted the  PPPbased per capita GDP of various countries  The data comes from the April  IMF World Economic Update  The countries classified by the IMF as advanced economies are in dark blue the countries designated by the CIA World Factbook as in transition are in light blue except for Slovenia which is now classified as advanced the countries designated as least developed by the UN are in red and the remaining countries are in orange  As you can see the group of advanced economies is distinguished by their high GDPcapita and the group of least developed countries by their low GDPcapita but there is nothing to clearly distinguish the in transition countries from the others   Classifications by the IMF and the UN Since the in transition classification is no no longer used by the IMF and appears not to be useful I suggest that it should be dropped from the map  Also it would be better to use current data for the lists of advanced and least developed countries instead of the obsolete data used by the CIA World Factbook  I have prepared a possible replacement map on the left  It shows all countries classified by the IMF as advanced in blue  The other countries designated by the IMF to be emerging and developing economies are in red for those classified as least developed by the UN and orange for those not so classified