inline Row delete not setting custom request header

[boulepick]

Good day all,

i seem to be running into a minor issue that is causing a lot of headeach to me.
i'm using free-jqgrid 4.15.5 => https://cdnjs.cloudflare.com/ajax/libs/free-jqgrid/4.15.5/jquery.jqgrid.min.js

So my setup is as follow

  $.extend($.jgrid.defaults, {
    ajaxRowOptions: {
      beforeSend(jqXHR) {
        jqXHR.setRequestHeader('token', Token);
      },
    },
  });

and then in my grid setup i have

  const jqGridOptions = {
    mtype: 'POST',
    datatype: 'JSON',
    prmNames: { nd: null }, //  to enable browser caching of the edit data
    page: 1,
    pgbuttons: false, // disable page control like next, back button
    pgtext: null,
    regional: lang,
    guiStyle: 'bootstrap4',
    iconSet: 'fontAwesomeLight',
    loadonce: true,
    viewrecords: true,
    height: 'auto',
    rowNum: 20,
    sortorder: 'asc',
    rownumbers: true, // show row numbers
    rownumWidth: 35, // the width of the row numbers columns
    gridview: true,
    autowidth: true,
  };

  const certGridOptions = $.extend(true, {}, jqGridOptions, {
    url: URLGet,
    editurl: URLGridUpdate,
    pager: '#GridPager',
    colNames: certColNames,
    loadBeforeSend(jqXHR) {
      jqXHR.setRequestHeader('token', Token);
    },
    colModel: [
      {
        name: 'id',
        key: true,
        editable: false,
        viewable: false,
        editrules: {
          edithidden: true,
        },
        hidden: true,
        width: 80,
        align: 'left',
      },
      {
        name: 'name',
        // key: true,
        width: 400,
        editable: true,
        edittype: 'select',
        editrules: {
          required: true,
        },
        editoptions: {
          dataUrl: URLGet,
          cacheUrlData: true,
          dataInit(elem) {
            $(elem).addClass('inline-edit-cell form-control input-xs');
          },
        },
      },
      {
        name: 'image',
        search: false,
        editable: false,
        edittype: 'file',
        formatter: imagerenderer,
        align: 'center',
      },
      {
        name: 'verified',
        width: 80,
        align: 'center',
        sorttype: 'number',
        editable: false,
        edittype: 'checkbox',
        editoptions: {
          value: 'True:False',
        },
        formatter: 'checkbox',
        formatoptions: {
          disabled: true,
        },
      },
    ],
    // eslint-disable-next-line object-shorthand
    onSelectRow: function (rowid, status, e) {
      const $self = $(this);
      const $target = $(e.target);
      const p = $self.jqGrid('getGridParam');
      const rowData = $self.jqGrid('getLocalRow', rowid);
      const $td = $target.closest('tr.jqgrow>td');
      const iCol = $td.length > 0 ? $td[0].cellIndex : -1;
      const cmName = iCol >= 0 ? p.colModel[iCol].name : '';

      if (cmName === 'image') {
        if ($target.hasClass('addImgLink')) {
          console.log('need to add image');
        }
      }
    },
  });

  // ============ init grid
  $grid
    .jqGrid(certGridOptions)
    .navGrid(
      '#GridPager', {
        edit: false,
        add: false,
        del: true,
        refresh: true,
        view: false,
        search: false,
      },
      /* edit parameters */
      {},
      /* add parameters */
      {},
      // del parameters
      {
        onclickSubmit(options, delId) {
        // get the vale from 'id' (label: 'userID') column
        // and extend the postdata with name property
          return {
            ID: $(this).jqGrid('getCell', delId, 'id'),
          };
        },
        reloadAfterSubmit: true,
      },
    )
    .inlineNav('#GridPager', {
      edit: false,
      add: true,
      del: true,
      cancel: true,
      editParams: { keys: true },
      addParams: { keys: true },
    });

so for adds and edits this is working fine, the token is sent to the server in the request headers fine and i do not get errors, however when deleting a row, it does not send the token and from my google research i do not see where i can set this option for the Delete events. Is this a bug or am i doing something wrong here.

thank you