Hi,
In the new UI grid editable column, I set a value that is not recognized by M3, I had the same issue in classic UI and I got help from infor community to use the controller.editedCells property to set the list of edited cells and that fixed the issue in classic UI.
So i tried a similar way for script version >=2.0 as below but it didn't work i tried all possible debugging scenario couldn't find out a solution.
code:
const dataset = list.getData();
const data = dataset[i];
data[columnCAMU] = this.CAMU;
var cellId = "R" + (i + 1) + columnCAMU;
list.editedCells[cellId] = this.CAMU; // cellid will be "R1WSCAMU" for first row
list.setData(dataset);