Complete directions are here.  But here is a summary of how to change the results of a game.

1. Make the change in ACBLscore and produce a new .txt file with same name you used before.

2. Go to Recent Results and Recent Club Games and find the game's results entry.

3. Click the grey rectangle under the game's name labeled "Update"

4. At this point, you will be in the "submit file" procedure. DO NOT click the "submit file" button. It was clicked automatically by choosing "Update"

5. Follow the same steps you use to upload the file in the first place

6. When you get to the end, the title and category will already be filled in -- just press Save, and you're done.