Signals repainting

#1
Hi,

I am new to amibroker. Just trying some AFL to backtest historical data.
i have seen some signals appear/disappear after some time, so i found that it's repainting the signals. Then search over internet and found amibroker function BAR REPLAY. I tried and found that it's not repainting the signals:confused:
what is wrong here or m doing something wrong here.
 
#2
Also one more thing if BAR REPLAY shows it's non repainting then do we consider it's a good one.
I had done bar replay functionality in amibroker for an AFL, after that if i found that it's non repainting and signals are not changing then should we consider that a good system or check further for another things.