blowflies will typically go to a fresh body..but if the body gets opened up (with the dry mummified skin), flies will still go in and he's seen it a hundred trimes.
Opinion alert..rodents mentioned in this mornings testimony eating through dry mummified skin, still most inside THEN the blowflies enter..this sounds like it's dusek's 'angle'
Don't forget about our natural orifices...Haskell made it a point to make it clear that blowflies will enter ANY natural orifice...even if mummified.