ArcMap Tool-cost path

[Ahamann]

I created a weighted sum - raster.

Now, i want to now, what would be the best way from Point A to B and used "cost distance" and "cost path".

I get relatively strange outputs - I thought i get an output, where i can see easyly the best way.

But i dont know what to do with the backlink-raster. I dont see what should be the best way - do i have more with this new raster?

Thanks in advance