TL;DR: If the transliteration from Georgian doesn't sound similar to the name in the target language, retain the transliteration. For instance, use "Ialbuzi Street/улица Иалбузи" instead of "Elbrus Street/улица Эльбруса".

https://wiki.openstreetmap.org/wiki/WikiProject_Georgia_Abkhazia_South-Ossetia#Street_Naming_Rule_for_Different_Languages
