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.
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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.