I am trying to copy object from one artboard to another using "duplicate layer" but it seems locked. Would anybody know why I cannot move it?
2 Answers
Under the image tab, then under mode, make sure they both have the same modes set. I usually use RGB Colour. See if they both have that setting. Then try doing it once you switch it.
Layers (and layers groups) can't be copied. Drag and drop or duplicate (to destination) is the only way to move layers from one document to the other.
http://sivioco.com/blog/how-to-copy-layers-from-one-photoshop-document-to-another