Update web service after change in function module?

I'm working on some dashboards pulling data via a web service created from a function module in SE80. Function module --> Utility's --> More utilities --> Create web service wizard.

Now on to the question: once the web service is created if we do anything to the function module the web service breaks.

Is there any way to repair/regenerate the web service or am I stuck with deleting and slogging through creating a new web service if the function module changes?

Thanks!