[amibroker] How to save introday data when using IB feed?

[archstone2003]

Hi,

I am using TCNet as the EOD data, and I am also using IB. I know from 
IB you can get 30 day intra-day backfill. 

I am wondering how I can save the intra-day backfill, so over the time 
I will have longer intra-day backfill.

Thank you very much.