Transfer UV maps or Join as UVs? I'm trying to apply textures to a 3D character that I have modelled following a tutorial where has been used blender 2.66.1,while I'm using blender 2.76. At a certain point,I see there are differences between versions. As you can see from the pictures,if I do "CTRL + L",the last item is called "Transfer UV map",while in the tutorial the same feature is called "Join as UVs". I'm not experienced but I think that since there is a difference,I have to follow another procedure than that used on the tutorial. Also because,on the tutorial the 4 claws are the same size but my model has 4 claws of different size. 





I have separated (with P in edit mode) claws from the rest of the body and this is what happens when I try to transfer the UV maps of two claws :



So,what should I do at this point ? thanks.
The operator name from "Join as UV" in 2.66 is the same as the one used in 2.76 for "Transfer UV Maps" - bpy.ops.object.join_uvs() which would indicate that the description has been changed to better describe the function that is performed while the function performed is the same, meaning you should use Transfer UV Maps in a newer version of blender to do the same thing.

In the current release it is described as 


  bpy.ops.object.join_uvs()
  Transfer UV Maps from active to selected objects (needs matching geometry)


While back in 2.66 it was described as


  bpy.ops.object.join_uvs()
  Copy UV Layout to objects with matching geometry


If you also want to compare the source code you will find that the description used in 2.66 and the description used in 2.76 is the only part of the operator that has changed.