File Format fields order

[IT]

My library runs against a Postgresql backend.
But for every Schema I have an analogous File Format. I match field name and field position in the Schema and File Format.
Schema can reorder positions or insert fields easy and no trouble, but File Formats are a trouble if you try to change field order or insert fields in middle of a File Format.

Is the any easy way to reorder or insert fields in a File Format?

regards

xavier