Every one of the 2660 references was filed under European Russia. Corrected
against the RDA reference list: 991 are Asiatic Russia (15), and the 24 KA-
districts are Kaliningrad (126), which is not Russia for DXCC purposes at all.
1645 were already right.
dxcc_filter went from [15,54] to [15,54,126] with them. That filter decides
which QSOs are even considered, so leaving it alone would have made the 24
Kaliningrad districts unclaimable — a correction that quietly removes references
is worse than the error it fixes.
BA-27 (Mezhgorye) and BO-33 (Schebekino) are not in the reference list at all
and were left exactly as they were. Guessing an entity for a district nobody
lists is how a second wrong answer gets added to the first.
Only the dxcc field changed. Names differ in transliteration between the two
sources — Maykop against Maikop — and rewriting those was not asked for and
would churn 2660 lines to no purpose.