Tile Movement problem

Hi,

I am working on our platformer game and creating paths for it.

After playing the game, I realize I need to make changes to the path or add more tiles to an existing path. To do this I have to manually change that particular tile and all tiles behind it. Is there any way I can move the entire section of tiles at once.

Does anyone have a simple solution to this problem?

Any help would be very much appreciated.

Thanks and Regards,
Abhinav