A big shoutout to Mike Parker of The Brand Design Co. (Claremore, OK) for submitting these photos showing successful dye migration mitigation.  The top photo shows a print utilizing two base layers of Rutland Super Poly White which, while formulated for printing on 100% polyester, was not enough to block the dye migration on this very difficult substrate.  Mike had success, as shown in the bottom photo, by printing Rutland Super Poly White over Barrier Base.  Nice!