When adding a Source table at the Logical Layer table, it auto adds those physical table's columns to the logical table. Often I just want to assign fields to an existing field OR replace an existing OR just add them. I know you can just drag & drop from the physical table to the logical, but that just adds the field.
Unless someone else has a better way to do this, I'm all ears. But it'd be nice to have a wizard that lets users pick which fields you want to replace or reassign or add from a new table source in the existing logical table.