Redirect doesn′t work

Hello,

I′ve redirected a page (https://www.tool-factory.de/aluminium) to this one (https://shop.tool-factory.de/neuheiten/vhm-schaftfraeser-der-aluminium-line/) . I now woud like to redirect it to (https://www.tool-factory.de/aluminium-fraeser). I deleted the first redirect and then created the 2nd one. But it doesn′t work. The page goes still to the first redirected URL instead of the new one. What should I do?

Thanks in advance!