The first row in your csv/tsv needs to indicate how your text
Second, your data needs to be perfect. If a file is misnamed, or
if your csv names a file that is not in the folder, an error will
occur and the import will stop.
I've actually requested a while back that Mental Case provide
some sort of "report" after an import, to inform the user of any
errors, instead of stopping the import, the import can continue and
just make note of the error for the user.
fyi, I've also requested that mass imports be made even more
simple and robust—like the PC app Memorylifter. For that app,
all of the media files can be in one folder and a csv/tsv can
indicate the case, the media, and any other "side" info (like tags,
etc). The csv/tsv would then create the cases upon import.
We will probably make this possible in future. For now, study arch is the way to go.
It is not that complex.
Make a folder called Archive
In that, make folders Ungrouped and Groups
In Groups make a folder for your case (Russian)
In Russian, out your media files and Data.csv
Now zip the Archive folder by right clicking in finder and choosing Compress
If it doesn't work, you can send it to me to test.