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Entity aliases can be used in the "from" clause of the entity query services (see: Table 1. "alias(es)"). For example, "select * from dataset" would list all Studies that a user can see. After an old entity's type has changed, it will not longer appear in query results that filter by its old type alias. Instead, changed types will show up only under the new type alias. For example, a Data object will currently be listed with "select * from layer", if the data object is converted to a folderfile, it will then be listed using "select * from folderfile". The type change should have no other effects on entity query. Any deprecated entity field can still be used to filter entity query results even though the property values will be moved to annotations upon a type change. The entity query services already treats entity fields and annotations the same.
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