ALV : navigation in screens

Hello,

I have some troubles with my transaction.

Problem :

I have a standard selection screen with several fields.

If I execute I have a first ALV in which I can choose some lines and go in a second ALV with a command.

When I save, I launch a WorkFlow and I want to go back to the selection screen empty and leave the transaction if I execute BACK command.

I have done this with a call selection-screen 1000. But when I execute command back in this empty selection-screen I don't leave the transaction. I go to the previous ALV and then full selection-screen.

Best Regards,

Bertrand