When we read in MinLayerCell and MaxLayerCell, we convert them from 1-based to 0-based indices. But when we write them out (e.g. in the history stream), we do not convert them back. I suspect this maybe true of restart files as well, though I haven't tested it. If so, this would mean MaxLayerCell would get shallower at each restart by one grid cell.
When we read in
MinLayerCellandMaxLayerCell, we convert them from 1-based to 0-based indices. But when we write them out (e.g. in the history stream), we do not convert them back. I suspect this maybe true of restart files as well, though I haven't tested it. If so, this would meanMaxLayerCellwould get shallower at each restart by one grid cell.