In order view/access the contents of the file and to filter the data.
The only program in what I could open it is Emeditor but there is no filtering.
Tom's advice helped, dedicated process works whet you specify direct location to the file but not using upload.
But it was working for about 1-2 hours and failed - connection error, session timed out.
It imported 700 000 rows. i am very surprised and glad that awareim could do that, I will try it again.
But I now calculated that it imported less than 1% of all data so import can last for 100 hours !!! 🙂