Worldedit fails to paste all of the copy

[ScubaShark]

Just recently happening. Don't know if it's a config problem or not. When I try the //paste operation, seems that only the first 5x6 chunks get pasted and the rest of the area the world gets flattened but no copy of the structures. I've even loaded the outer chunks and still nothing. I've had a lot larger builds transferred over in the past without any issues. Am I missing something? ( Cracked Pack and Resonant Rise or where my current issues arise)