Convert old Atari files .arr & .all


I used to do music with cubase on Atari and have some old files with extension .arr and .all
I tried to install cubase sx 3 as mentioned to be able to convert them but cubase sx does not want to work.
I then tried to use an Atari/cubase emulator. Cubase starts, loading a .arr or .all works and I can see the midi tracks but if I export in .mid file, they are always empty in a newer cubase version.
I actually renewed my PC and soft, lucky to have cubase 7.5.

Has someone the same problem ? Found a solution ?
May be someone can convert them for me.

Thanks in advance for your help.