Update chart for update data in CSV file

Hi all,
I have a trouble with data update in csv file (download from Yahoo Finance) import to Amibroker: new data update don't show in Chart.
Plz help me. I use AB 5.70 rc1. Tks

Minimum supported AmiBroker version is 6.0.

AmiQuote 3.31 downloads and imports data from Yahoo automatically. There is no need for manual import.

Tks you.
If I change to AB 6.x, How can I keep things I draw, noted in chart?

Every version back and forth keeps the drawings.