Writing modified date of a document library item through CSOM.

Question

I´m working on an application which is replicating files from one document library to another. Since it is a replication, I want the modified date to be preserved when I copy the file from the source library to the target, so that the user will see the real
modified date in the target library and not the date of the replication run.
I access SharePoint through the client side object model and I have been able to set the modified date on a SharePoint 2010 on-premise using the following straght-forward code:
var listItem = list.GetItemById(id);
context.Load(listItem);
context.ExecuteQuery();
listItem["Modified"] = "03/11/1999";
listItem.Update();
context.ExecuteQuery();
Unfortunately when I execute the same code on any other SharePoint (2013 On-Premise, 2013 Online or 2010 Online) the code will execute without any errors, but the modified date will not be changed at all.
My actual question is: Is there any possibility to change the modified date throught CSOM on all of these SharePoint-versions?

Answer 1

I got a work around for this problem..
Before updating the Modified, Modified By values, First we need to Disable the version settings for document library. Once the fields updated then again we need to enable the version settings. 
find the updated code below..
                                      //Disable Version settings for DOC LIB
before update Metadata
                                        _List.EnableVersioning
= false;
                                        _List.Update();
                                        _cContext.ExecuteQuery();
                                       ListItem item = newFile.ListItemAllFields;
                                       _cContext.Load(item);
                                        //Updating Metadata Created,
CreatedBy, Modified, Modified By
                                         item["Created"]
= "8/10/2013 7:04 PM";
                                         item["Author"] = CreatedUserValue;
                                         item["Modified"] = "8/10/2013 7:04 PM";
                                         item["Editor"] = ModifiedUserValue;
                                         item.Update();
                                        _cContext.ExecuteQuery();
                                        //Enable Version settings
for DOC LIB after update Metadata
                                           _List.EnableVersioning
= true;
                                          _List.Update();
                                        _cContext.ExecuteQuery();
Rajendra