MetaARPA VPS question

Hey fellow MetaARPAns! I use the MetaARPA VPS service, and I run a NetBSD image. Right now the image is NetBSD version 9.1, and I'd like to upgrade to 9.3. Has anyone done this (and if so what did you do and do you have any tips)? Will sysupgrade in pkgsrc Do The Right Thing^tm in a xen environment?

Many thanks in advance!