Copy Row Contents but Only Certain Cells and add Timestamp - google-apps-script

Question

I would like to have it that when a row is edited that it only copies the name phone and adds a timestamp of the edit on another tab in Google Sheets.
function onEdit(){
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName('Main');
var date = new Date();
var rowIdx = sheet.getActiveRange().getRowIndex();
var rowValues = sheet.getRange(rowIdx,1,1,sheet.getLastRow()).getValues();
Logger.log(rowValues);
var destValues = [];
destValues.push(rowValues[0][0]);// copy data from col A to col A
destValues.push(rowValues[0][2]);// copy data from col C to col B
destValues.push(rowValues[0][1]);// copy data from col B to col C
destValues.push(rowValues[0][3]);// copy data from col D to col D
var dest = SpreadsheetApp.getActive().getSheetByName('Updates');
dest.getRange(dest.getLastRow()+1,1,1,destValues.length).setValues([destValues]);
}
The above is working but i cannot figure out how to get the timestamp to show.
The outcome should display the roadname, phone and then C:C should have timestamp of change made.
I have updated the below sheet to show expected outcome
https://docs.google.com/spreadsheets/d/1V3Ne9L0kB97OkFKwlidx40yN__sx78aRik_Ujiej2Wc/edit#gid=1523701088
How I want it to look.
Result Image
Data source
Source Data

Answer 1

Your written explanation is inconsistent with your sample output which is inconsistent with your script. destValues.push()-you are pushing 4 (four) values onto the array (including "Phone Number", "Date Contacted" and "Clan Name") but your expected outcome only has three columns (excluding "Date Contacted" and "Phone number"), but the "Phone number" is in the "Clan Name" column.
REPLACE
destValues.push(rowValues[0][0]);// copy data from col A to col A
destValues.push(rowValues[0][2]);// copy data from col C to col B
destValues.push(rowValues[0][1]);// copy data from col B to col C
destValues.push(rowValues[0][3]);// copy data from col D to col D
var dest = SpreadsheetApp.getActive().getSheetByName('Updates');
dest.getRange(dest.getLastRow()+1,1,1,destValues.length).setValues([destValues]);
WITH
var date = new Date()
destValues.push(rowValues[0][0]);// copy data from col A to col A
destValues.push(rowValues[0][2]);// copy data from col C to col B
destValues.push(date);// copy data from col B to col C
var dest = SpreadsheetApp.getActive().getSheetByName('Updates');
dest.getRange(dest.getLastRow()+1,1,1,destValues.length).setValues([destValues]);