Instead of grading sample size patterns with seam allowances, the better way is to grade directly on the draft so that the graded patterns can be precisely walked and trued.
Size breaks are nested to provide an easy view to spot any improper grades.
The grade rules on the draft will automatically applied to the linked pattern pieces that has all the seam allowances from sampling. More accuracy without extra work.
The walking seams with grading is truly unique with the digital patterndrafting system. Once the system walks the seams, it shows how much the seams are matching and gives options to true the seam length such that the seams are matching for sewing.
Traditionally, graded pattern pieces are not walked and trued, but digital patterndrafting can bring production pattern quality to the next level.