I was having same issue, and the solution was working but with some alerts and warnings so here is full solution, the key was to check for existing DataTable object or not, if yes just clear the table and add jsonData, if not just create new.
var table;
if ($.fn.dataTable.isDataTable('#example')) {
table = $('#example').DataTable();
table.clear();
table.rows.add(jsonData).draw();
}
else {
table = $('#example').DataTable({
"data": jsonData,
"deferRender": true,
"pageLength": 25,
"retrieve": true,
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