Modifying the display of a layer in a drawing does not mark any parts or assemblies as modified. Therefore, you do not need to save parts and assemblies and resubmit them to Pro/PDM when you toggle layers and save them.

Also, the drawing looks as it should when you retrieve it, regardless of the changes that you may have made to the model layers. Because one of the benefits of the ignore_model_layer_status setting is that changes are not be made to the model or model layers, you cannot add items or remove them from model layers. However, you can manipulate items directly on drawing layers.