Add child rows visibility status to state save params

Having read around the forum I think I am right in saying that at present it is not possible to add the status of a child row, i.e. open or closed, to the state params?

Currently I use this method to reload the table,

var table = $('#cms_module_system_bookings').DataTable();
table.ajax.reload( null, false );

So my question is can another option be used to reload server side table data which does maintain the status of any open child rows? If not, is there any conceivable way a solution could be developed to maintain the status of the child rows?

Many thanks