For example, if I have processed the layers in detail, and the number of layers has increased, you can use "Merge View Layers" to leave one layer and delete the other layers, then copy that one layer and paste it on top of the blacked-out layer to make it easier to see. If you copy a layer and paste it on top of the black fill, the entire copied area will not be selected, and there will be a blackout area, which is still affected during the layer processing.
(1) After editing an image layer by layer, use "Merge Visible Layers" to erase other layers and leave only one layer.
(2) Copy a part do D#4 until D#5.
(3) Paste the copied image into the blacked-out area for clarity.
(4) As shown in the attached image, the data from when the image was edited remains in each layer, and the background is copied out, not in one layer.
This is a simple example, but if you merge with the lower layer, the upper layer will be blurred, so you use "Merge Display Layers", but the part you want is not cut out, and copying does not go well, and I think it is not completely merged into one layer.
830f2ce3-f95e-4ed1-877f-4549499ec727.dmp