Dear community:
I dont know if someone are going to reply in this post because no one reply my lastest posts but whatever. I dont know i find a save in my folder that its was created in the pak 13353. I dont know if the pak exist at the moment but its a little strange.
Bug report: a savegame appear in a unique pak (called 13353)
https://simutrans-germany.com/files/upload/New_pak.png
Now, this was the name the pak folder had on the server. 13353 is the default port, so the server owner wanted to identify it quickly.