Problems opening photoshop files in ms5

  • Hi,

    whenever I open a file, I have worked with in Photoshop CS6, in Manga Studio 5 EX, the file changes size. The resolution goes from 300dpi to approximately 1200dpi and the image itself is heavily reduced in size.

    Why does this happen and how do I prevent it?

    (If I open a file in ms5, it retains its size when I then open it in cs6)

    thank you,