Publish ebpapplication.css does not work

Hi,

We are running SRM 4.0 on WAS 6.40 on an Internal ITS.

I have struggled a bit in how to change CSS but have now found that I can change the file /sap/public/bc/its/mimes/bbpglobal/99/style/ebpapplication.css that I find under the MIME folder of Internet service BBPGLOBAL.

So I do the change in SE80 and the style sheet and then Publish on "All defined sites". If I call the ITS directly from the browser then the style sheet changes have an impact. But if I browse into the SRM through the Portal, then the change did not have an impact.

How do I do to make the change to impact the style through the portal as well?

(I have tried using the ITS Theme Generator without success)

Best regards and a bunch of thanks in advance,

Mattias