Hello vicvolar,
Thank you for contributions
Some moments: 
1) please, try not to use is_in:* tags, they were marked as obsolete, because client products evaluate location themselves.
2) if it is possible, follow the next logic: in name and name:ab use current Abkhazian names, in name:* correct transliteration of the Abkhazian name, in name:ka - official Georgian name (they usually differ from current Abkhazian). If you are ready for cleaning up all this region, I can send you the official toponyms dictionary of the Republic of Abkhazia