ZBrushCentral

bug of layer or its mechanism? (selfsolve)

I sculpted a character for a while with multi-layer, after that I goz it to modo for posing. Because it’s soles were not on the ground, so I made a move. Then rig, posing, and goz back. Then I want to refine it, so I opened a new layer and sculpted for a while. When complete, I switch off this layer’s record mode. Then the character return to the air…

I just found even open or close any previous layer will let the character return to its previous position. This a bug of layer or just its mechanism?

I just found if I create a new layer to record the move of Y axis, then other layers will work fine.