Hi,
so far as I understand all the data you are importing are at first in the log oder archive-files. When the server is stopped, the whole data is written into the csv-files.
Of course there is a automatically backup of the server-data.
But this is a trap: You only can use the csv-files for a backup, but if these data are not written in the csv-files, because the server has crashed or hase stopped because of a failure, you have no chance to get the old data: Maybe I am wrong, but I have found no way the get the data out of the log or archive-files. But if somybody knows a method, it would be great!! I lost my data one one year in a similar way. Now the IT-department has programmed, that the server stops every night and restart automatically, in this case the data are in the csv-files and secure.
Best regards
Roland