Note
While running reconciliation jobs in the Sandbox dataset, even though an attribute may be visible in the form field for a categorization class, reconciliation engine does not merge the attribute.
Example
The OtherTypeDescription attribute belongs to the ConnectivitySegment class which is a child of ConnectivityCollection.
The ConnectivitySegment is a categorization class and hence the storage for the OtherTypeDescription attribute is present on the parent form.
When a reconciliation job runs and is processing a CI of ConnectivityCollection class, the value of the OtherTypeDescription attribute for ConnectivityCollection class is not retained after promotion. This is because this attribute does not belong to the ConnectivityCollection class and is not reconciled for a CI of this class.