Since 8.0, repeating policies and ResourceRef errors

I'm sure I'm missing something obvious, but since updating from 7.6 HF7 to 8.0 HF1 we're seeing policies retriggering repeatedly throughout the day. We've tried deleting and recreating the schedules to no avail. Anyone else seeing any evidence of this behavior?

I'm also seeing repeating instances of the old ResourceRef errors that I used to see back when we were on 7.1 hotfix something or other in the server logs. These are happening for the Aex data classes, like so:

ResourceRef should not be specified in single resource processing mode for Data Class: 'AeX NetworkZone Usage' (da8508f5-1aed-41d5-90de-0f225782d738), value=1

or

ResourceRef should not be specified in single resource processing mode for Data Class: 'AeX AC TCPIP' (37974fb9-e60e-4027-b72d-19e3f088a6a5), value=1