// so we just replace whatever is on the disk into memory.
		cache.iamGroupPolicyMap = newCache.iamGroupPolicyMap
		cache.iamGroupsMap = newCache.iamGroupsMap
		cache.iamPolicyDocsMap = newCache.iamPolicyDocsMap
		cache.iamUserGroupMemberships = newCache.iamUserGroupMemberships
		cache.iamUserPolicyMap = newCache.iamUserPolicyMap
		cache.iamUsersMap = newCache.iamUsersMap
		// For STS policy map, we need to merge the new cache with the existing

	if err != nil {
		// No useful information...
		return cache, err
	}
	s.newCache.forceCompact(dataScannerCompactAtChildren)
	s.newCache.Info.LastUpdate = UTCNow()
	s.newCache.Info.NextCycle = cache.Info.NextCycle
	return s.newCache, nil
}

// sendUpdate() should be called on a regular basis when the newCache contains more recent total than previously.
// May or may not send an update upstream.