Also those properties are lost if you transfer the data to another format then back, or don't properly survive copy/cut/paste operations (often cutting will rem

Also those properties are lost if you transfer the data to another format then back, or don't properly survive copy/cut/paste operations (often cutting will remove everything about a cell including options such as these). As well as being easy to be lazy and not use the options, it is easy to accidentally undo them also.