Property Groups in cells have 3 Property Sets: Odd Rounds, Even Rounds, and Breaks. This was originally designed to allow changing of colors (and whatever else you want) of cells for odd and even rounds, signifying the need to change the deck of cards each round. A Property Set for breaks allows a further color change to make it obvious the tournament is currently in a break period.
If you changed one of the included templates, I suspect you probably changed only the Odd Rounds property set. Therefore, on even-numbered rounds, your changes seem to "disappear". You need to extend your modifications to the Even Round and Break Property Sets of each cell. If you don't need for the screen to change colors, etc, on odd/even rounds, then you should simply delete the Even Round and Breaks property sets of each cell.