Can we maintain original copy of task at its place while dragging task to new location

Hello Hajaj,
There is no built-in way to do that. You need to implement a custom solution by using the Gantt API and Javascript.
For example, you can use the addTaskLayer function, to draw the task bar on the specified dates while dragging the task:
Here is an example of how it might be implemented:

Thanks for the reply its working fine…