@GuppycurOk, will be implemented in one of the next versions (if I don't forget it

).
@Spectral Force
Let me know if the auto-update works.
@stallionsden
Lol. Just a few technical details:
* The max. prefab size is 1024 x 1024 x 256 atm
* The file size of this prefab would be ~1.7 Gb (without painting)
* The memory consumption would be 14 Gb (it's not optimized yet)
So there is a chance but this will take awhile...
The damned bugs you guys have found keep me busy. I made some progress but need more time ( 1 or 2 days). The good news is the patch also fixes the crashes caused by delete row/columns.