I have written this Condition to search for stocks closing in the upper quartile of the 2d range:

C >= ((MAXH2-MINL2)*0.75) + MINL2

I have gotten results which look wrong (e.g. ADM is showing up as TRUE).  When I go to the formula for ADM, it shows that my script has been changed to H > ((MAXH2-MINL2)*0.75 + MINL2.  Why did TC2000 convert my formula from C to H?

Could it be that there's a blackout window x minutes or hours prior to the new day open?

TC2000 should never change your Personal Criteria Formulas (and I have never seen it happen).

Note that if you alter a PCF after you have used it someplace in TC2000 version 12.2, it does not alter it in places where it has been already used as those are copies of the PCF and not linked to your PCF. You would need to remove and re-add it to places where it used to get those places to reflect the changes in your PCF.

There is no blackout window prior to the open. In fact there is currently a bug where during the first 15-minutes of the day, Personal Criteria Formulas reflect information from the prior day instead of the current day. After the first fifteen minutes of the day, the results are based on current realtime data however (be it BATS for Gold or the consolidated tape for Platinum).

If you still think TC2000 is altering your PCFs for some reason, you should probably contact technical support.

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