Redirect problem with "entry" inside url

Dear Sirs,
I have the following problem:

If I redirect for example this url:
Redirect permanent /leistungstests/pwc-test http://www.bernd-stumpp.de/sport/leistungstests/entry/pwc-test

I am landing here:
http://www.bernd-stumpp.de/sport/leistungstestspwc-test

You can see, that the snippet "/entry/" is gone. Do you have any Ideas / suggestions to solve this issue?

Cheers,
Bernd