Child Vouchers to be generated when using with Product Bundles

We use the WooCommerce PDF Vouchers with WooCommerce Product Bundles and noticed that, yes the parent product generates a voucher, however, the child products (the product that the bundle is made up of) does not.
The WC email shows there a download link for the the child products, but when you click on it you get an error, since no actual voucher was generated. It would be nice if if the child products have vouchers enabled that it generates vouchers for them as well. Perhaps even a feature where the the vouchers can be disabled for the Parent Product and ONLY the child product generates vouchers.
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Case Study: Lets say for example you are selling a VIRTUAL VOUCHER BOOK. We do not want a voucher for the book itself, but you do want the items within that book (child products) to generate vouchers.