PuTTY session closes too when winscp closed

Hi everybody,

I´m using winscp and putty, both as portable version. I use PuTTYPortableLinker.exe so i can run a putty-session out of the opened winscp-session. My problem is, that the putty-session closes if i close the equal tab in winscp. Is there a possibility to let it opened even winscp will be closed?

Thanks in advice