I got an xml file that holds path information from another wisski system.
How can I import this file into my wisski system to be able to use those file?
go to the edit page of the pathbuilder you want to import the paths in. (In the Manage toolbar go to Configuration » WissKI » Pathbuilders » Edit.) Go to the section called Import Templates. There you can enter the URL of the paths file and click Import.
Where to get the URL from: If you are using a paths file directly from another WissKI system, just copy the URL that the origin WissKI provides. If you've got the file locally, you first have to upload it somewhere. E.g. you can use the possibility to upload files in your own WissKI.