Need to change Pipeline URL

Hello,

I need to change the pipeline url for my XI. I did changed it in SLD -> Business System and in SXMB_ADM -> Integration Engine Configuration. But when I check the configuration in SXMB_ADM (F7), it seems that everything is not correct:

Yellow triangle and this message: "Corresponding Integration Server: Current Configuration <> System Landscape"

What can I do to force the new pipeline url to be used ? Restart something, refresh something ? I did refresh everything I can, but it didn't fix the problem.

Please be specific in your directions, my XI administrative knowledge is limited.

Thanks

Jerome