Hi, I don't know how to solve your problem, but I can recommend what I am using. I am using tickstory software, for easier data downloading from dukascopy. It have already fsb data format, also it can change data timezones, it was big problem for me when my broker had +2 DST time and dukas data only 0 gmt ...

Thank you very much for the tickstory-hint.
That took me already a step further.
I have installed and tried, but do not quite understand yet how to use.
Do I have to use "download..", "export to file..." or "export to MT4..."?
I managed to get some hst-files with tickstory-name to a MT4-directory, but don't know how to get it from ther to FSB
When I tried to export into file as "csv" I recieced an error, that the access to the path was denied.
Is it possible to use the free SW or do I need the paid version.
Please explain how you do it.

Hi again,
I press right mouse button on the symbol, then choose export to file, choose time period (since 2007), timeframe, timezone and Output format "Forex SB bar Format". Set a name in this manner "AUDUSD1440.csv". After finishing I cut and paste these files to fsb data folders Not sure if you can do this with free version, I am using paid one, long time ago was using it real tick data for some EA back testing and simulated fast learning with mt4...