Items incorrectly snapshotted on import when alters present

Problem/Motivation

When an item is affected by alters, its snapshot is incorrectly updated when updates are run, leading to spurious diff listings.

Steps to reproduce:

• Install Configuration Synchronizer, Config Actions, and Config Actions Provider.
• Install module A that includes config in config/install.
• Install module B that includes a config action in config/actions that modifies a config item provided by module A.
• Manually edit the config action in module B.
• Import configuration updates for module A.

Expected result: no further configuration updates are available for module A.
Actual result: one or more configuration updates are listed as available for module A, though in fact there is no update to import.

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes