Thank you for your response!
I believe that due to language barriers, I probably couldn't make myself clear in describing my question. I apologize for that.
In fact, I'm using a lab SMS.
I then transferred an old log file to the $FWDIR/log directory.
From there, when I enter SmartConsole and connect to this SMS, I can open the log file (see attached screenshot) and perform some queries from this newly (old) loaded file.
However, I'm unable to perform the export to .CSV, as this functionality has been migrated to the web version of SmartView.
On the other hand, when I access the web version of SmartView on this SMS , I can't use the "File - Open Log" menu because it simply does not exist. So I am not able to open this old log file. Because of this, I can't perform the necessary queries, and consequently, I can't export the .csv file (simply because I couldn't even open the log file in the web version of SmartView).
The great paradox is:
a) When I use the combination of SmartConsole client + SMS, I can open an old log, but I can't perform the export.
but...
b) When I use the combination of SmartView web + SMS, I might be able to export to .csv, but I can't do it because I simply can't open an old log file.
The point is: I didn´t want to reindex... I just wanted to open an old log file, query it and export the query results.
Sorry for the long text/explanation.