I don't think there is a much map difference between rus and eur. Checked the files withing the packages. There is a api version diff for search, so it is normal that all search files has different sizes and the only difference between the map files are within 200-300 kb. So if there is a map difference it shouldn't be such a big thing.
yea i dont think there is much difference either. i zoomed out in the MAP in EUR version, whole europe + russia seems to be in it, so yea. i guess next update in September, we can easily get it from the Russian updater again