Sure it's easy to change objects to another layer when you know the destination layer name...but what if you don't? You can see the objects on the desitnation layer - so you do a layer reconnaissance mission to determine the layer name. Too much work! Use the Layer Match tool (LAYMCH) tool to quickly change objects to the same layer as an existing object. Just select the objects you want to move to another layer - and select an object on the destination layer - it's super speedy!
Check out my Cadayst video on LAYMCH - and for all of you Americans - I wish you a fantastic Fourth of July!.
(I say that like the rest of you are skipping right over to July 5th... Of course I wish everyone a fantastic 4th of July!)