@alfredo: As written above:
You ... should ... isolate the script from any configuration storage to prevent any caching.
https://winscp.net/eng/docs/scripting#configuration

How to automate Clear cache for everytime I run a new session in CMD?

Tnx a lot, works fine.

You can clear the cache in WinSCP GUI:
https://winscp.net/eng/docs/directory_cache

You can (and should) also isolate the script from any configuration storage to prevent any caching.
https://winscp.net/eng/docs/scripting#configuration

I use winscp.com in script where it was previously:

This was resolved as /media/pi/TOSHIBA EXT and no further.
After I changed target name to /media/pi/TOSHIBA_EXT/Bacup_Asus script fails due to the directory .../TOSHIBA EXT does not exist.
How to teach winscp.com that script was changed and target is changed.