DislikedTo confirm the repaint thing, put daily or 5min chart in strategy tester and then let run some arrows. Then go to historical chart in the same date like the chart of the strategy tester and then you will see in the chart tester some arrows that doesn't appears in the historical chart. If you make a very good profit how you make the indi don't repaint?? CheersIgnored
What I have been doing for a few months is when an arrow shows up on a closed candle I mark it with an arrow from MT4 and so far no arrows have disappeared. What you do get is an arrow will show up in the middle of a candle while it is forming but if you quickly change TFs it will disappear. Also if you put the actual ADX indicator on the chart you will see how the +DI and _DI crosses line up nicely with the arrows.
Maybe if you are worried about it just use the ADX indi form MT4. Seriously the arrows are working fine. I think the arrows you notice are from when during a candle forming the ADX might cross and then uncross. (not the actual ADX but the +DI and -DI lines)