Amazon Footwear Compliance Attributes

After the implementation of Amazon's detailed shoe compliance requirements, we've found that our listing times have been greatly hampered due to the repetitive nature of editing each individual listing. As we've already selected the relevant attributes for the parent, would it be possible at all for Storefeeder to automatically sync the variants with generalised attributes (e.g. Footwear Size System, Shoe Size Age Group, etc) and any variants specific to children remain untouched?