Systemd on vivid beta

[Colin Law]

Does anyone here know enough about systemd to answer a question?

Vivid is changing over to it today.  I have some custom init.d scripts
dating back to before even upstart came along, which have been working
fine.  With the change to systemd should these just continue to work
ok or do I need to do anything?

I ask because one of them is playing up.  I can go into more detail
but would like to know first whether it should just work.

Colin