Copy table doesn't have any mapping or anything - so the first field in the source gets copied to the first field in the destination. The second field in the source gets copied to the second field in the destination. Your data source you are copying from has Etching then ID. Your main data source has ID then Etching. Thus, ID is getting copied into your Etching field, I'd imagine.
While you are working through this, I'd display the secondary data on the form, and make sure my main data source values are all displayed as well (Etching, with its radio button control, is not showing its value to you).