Hi,
Yes, that should work. Not sure why you get that error.
1] What's the SCS ?
2] Can it be that even though they're the same SCS, one of the scenes has some elements at the cartesian origin ?
3] Can you create copies of the scene file, delete out all layers except 1 layer consecutively, then try importing 'layer cej by layer cej' ?
Lemme know.
matt