How to handle jobs during system upgrade?

Hi,

We are planning to upgrade CPS to the latest release but are a bit uncertain how to handle jobs during the downtime.

Let´s say we have an hour of downtime and a handful jobs that we normally run with a fifteen minute interval, can we use the presubmit option to have them scheduled in the back-end system right away (even though CPS is down), or am I forced to manually set up the jobs and schedule them in back-end during the downtime phase?

Any input is welcome.