We solved this issue until the new feature requests becomes available.

// The important thing to remember is NOT TO RETURN FALSE.  You
// must let the execution continue to "STARTED" event.
$(.selector).on("iggridupdatingeditcellstarting", function (e, ui) {
    
    var canEdit = true;  // Your condition goes here

    if (canEdit) {
        return true;
    }

    var event = {
        e: e,
        ui: ui
    };

    $(.selector).one("iggridupdatingeditcellstarted", $.proxy(function (e, ui) {
        if (this.ui !== ui) {
            return;  // Not the same event - some other subscriber cancelled the "STARTING" event.
        }

        var editor = $(ui.editor).data("igEditor");

        editor.options.keydown({  // 9 === TAB KEY
            which: 9,
            key: 9,
            keyCode: 9,
            target: ui.editor,
            shiftKey: false  // You'll need logic to capture this to natively traverse between fields
        });
    }, event)); // Proxy this event with the original event
});

Not sure how we are going to cover this requirement yet.  I'll need to play around with it.  I'll have more details the moment we have something.  Until then, I guess I'll need to create a feature request.

I've added a new feature:

http://ideas.infragistics.com/forums/211535-ignite-ui/suggestions/8962882-tab-to-next-available-row-when-celleditstarting-ev

Hi,

If I can provide you with any further assistance, please let me know.

Regards,

Tsanna

I agree on that :-)