Hi,
I am currently using TradeStation (TS). In TS, only 6 months of tick data is available for me to backtest any strategy. I looking for 10 to 20 years of @GC tick data in order to backtest one of my strategy. Is there any way to get these data in text file and use it in TS?

Thx in advance.

The further back you go, the less reliable the tick data

What are the other ways to backtest a Strategy which uses tick data (range)? Thx in advance.