Rewrite Old Urls In Web.config

we are using CS-Cart hosted on windows, IIS7.5

with Url Rewrite Eanabled,

so far so good

I want to create some custom rules to redirect “older” urls to “newer” ones after migration

I am trying to add those rules in IIS7.5 (done it before on other websites) but rules are …ignored…and don't work…

excerpt of my web.config: