serv-U ftp connection refused after changing IP

I changed the IP of my system from A to B due to some network reconfiguration. And all of a sudden serv-U-ftp server stoped working.
I thought logically a restart of the ftp server should make things ok.
But it didn't . When I was digging through the startup logs and init files,
I found it was trying to bind to the old IP A.

I had to change that in "Program Files/serv-U/servudaemon.ini" file and it worked fine.

[DOMAINS]
Domain1=bb.bb.bb.bb||21|host|1|0
[Domain1]