With script, How to duplicate header rows that have "cross rows and columns"?

[dublove]

The original script doesn't seem to work anymore?

function dupeTopRow(t){
    var newRow = t.rows.add(LocationOptions.BEFORE, t.rows[0]);
    var newCell = newRow.cells
    var lr = t.rows[1].cells
    for (var i = 0; i < newCell.length; i++){
        newCell[i].properties = lr[i].properties;
    };  
}

[rob day]

I don’t see a convertToRowType() method in the API

[dublove]

@rob day 

Here, m1b updated on 8/26, and I had no idea.
Good thing you asked—I just checked the old posts.
Unbelievable, he updated. m1b is truly amazing.
https://community.adobe.com/t5/indesign-discussions/extendscript-how-to-convert-selected-table-rows-...

[dublove]

Edit 2025-07-19: added check for undefined cells in getRows function.

This version seems to have a lot of errors.
I don't know what version mine is, but it's actually correct.