Hi Matteo. This feature is already implemented in ACC Server Manager.
By selecting a result file in the "Result" tab and clicking on the button: "Result Detail / Advanced Options", you will find the Invert grid checkbox.
View attachment 562671
Once the option is ticked, you can click on the set grid in entry list button (obviously the entry list loaded in the specific tab must match the selected result file).
The positions will thus be set in the entry list inverted with respect to the selected result file.