So I decided to install BI 4,
Exported all cameras, and system.
Uninstalled BI 3,
Did a defreg.
Installed BI 4.
Running it in demo over the weekend.
Imported all cameras.
Did have to do as fenderman said about the motion.
But all seems working.
Going to leave it running over the weekend and have a look at it later.
Did notice that it was using less cpu than BI 3.
Like the look too.
Hopefully purchase licence after the weekend.
Fingers X
Thanks for the advice all.