After testing according to nruddock suggestions i can confirm that the problem still persists, definitely poser is doing some weird stuff when exporting, i suspected as much when i compared the size of the original file and the size of the one exported, they are different, which for me means different stuff on the file, thank you for your help anyway, but, maybe we could still figure out what is wrong. Thank you icandy265, i would really like to know what happens when poser exports it, maybe it inverts the vertices?