@hoopla @barbagris that's the correct procedure to zero the Autotune's recommended trims table alright,,,
but it is the "Fuel" table you need to zero in this case, if you want to start with trimming the ECU map fuelling to become closer to the Autotune's Target AFR table values.
The Autotune will change the values in the Autotune Trim table itself. No harm in doing both though
This table has the target AFRs that Autotune will work towards, by intercepting & altering the signal from ECU to injectors, while watching what AFR its O2 sensor sees;
Once you have a good target AFR table for power/economy, in whatever shared capacity you want, you can leave it alone.
This is the table of trims that Autotune is recommending to you, to get closer to the AFR target in the table above.
If you accept these trims, they will be added to the "Fuel" table far below
You can zero it as you've posted above
Aaaand this is the Fuel table - these are the trims that you must zero in this case.
They must be zeroed manually though, you can just click and drag over all cells, and press 0 on keyboard. Just like Excel for example
So that the Autotune can do its thing without having to overwrite what trims you think are necessary
(if you didn't have Autotune, just the PCV, you would manually input these values yourself)