These are mainly because the fixture's UUIDs are deterministic rather
than time-sortable, and more places where we need to correct the fixture
IDs as well.
to encompass behavior related to auto-closing and auto-reconsidering.
Note that putting this code in a single place reveals an asymmetry
between the actions:
- Auto-closing period is an optional attribute of a collection
- Auto-reconsidering period is hard-coded to 30 days for all collections