Excatly as Velocity said! After converting those SData to csv file, it's really few minutes of work.
And actually, with SData for skills, monsters I think you can just take those files from EP6.3 US and put it instead of pt one in PT client. With items there is bigger problem coz not everything is same but here comes python converter

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Of course with copying files from US client, you should check if everything matches in PT client.