AC has a serious bug with Cyrillic characters!
Yesterday I opened an AC10 project in AC11. The project had been made on my old computer. I was astonished to find that all the Zone names had turned into "monkeys"! The same had happened to Layer names, View names and Layout names! Strangely all the Texts, Labels and Project Map names were fine!
The same happens with both the PLN and PLA files!
When I installed AC10 and opened the files in it they were ok! So this is definitely a AC11 bug!
This makes working with these files impossible, because they have a lot of custom made Library Parts and many of these Library Parts have already been resaved in AC11, which makes them unusable in AC10!