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I queried the good people at Golden on this last year and the short version of the response is, while they currently have no real official word, until they are able to complete their own planned testing, however they recommended a thin coating of Mat acrylic medium before going to oils to increase tooth of the acrylic paint.
Further they recommend their own full bodied acrylic color line if you do this on purpose, since they are formulated the same as acrylic gesso and would take oil paint much better than standard acrylic colors.
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