'orderby' is used to determine the ordered layout of columns in both the grid and the forms.

if the column attributes within 'colModel' are not in the same order, I have discovered data from 'add' forms are being stored in the grid fields incorrectly. They save following the colModel order which is not used in the gridlayout. They should be saving using the 'orderby' order.

One might suggest to just order colModel the same as orderby, but orderby is a 'list' where as colModel is an 'array' of key:value pairs. Many languages have table-tojson parsers/combinators that will not be sortable without significant performance overhead and/or bloatware code.

It would be nice if this could be fixed.