I am currently experimenting with the background label and the interactive Segmentation. When I “lock” the Background, It seems that it locks the invisible “Clear Label” instead of the Background. Is this an intended behaviour? I have seen in the exported NIFTI File that the Background I have annotated has 253 and the real Background the number 0. What would be the best way to work with pre-processed segmentation? For example we would use Unet to pre-segment the lung-lobes, we would then make all other regions other than the lungs to 253 to make it to background. Then we would load the segmentation and could lock the background so we won’t have to worry about other regions other than the lungs. We are not sure if it is better to leave the background as “0” and to lock. It is kind of complicated. I hope I could somehow explain our approach. The main question is, in which way the “interactive segmentation” works better: background annotated as number 0 oder 253 in the pre-processing?