TRUNCATE table using Synonym in a non-local db

I have verified that I can use TRUNCATE to delete rows a table if synonym resides in local database but not if the synonym is in a different database. This appears to be restrictive in our environment where we have an Alias database with synonyms to tables in 18 other databases. All the applications connect to the Alias db. For example, the statement: TRUNCATE pg_maor; gives: -556 Cannot create, drop, or modify an object that is external to current database. We all know the efficiency of using TRUNCATE over DELETE. Is there an alternate statement I can use to accomplish the results with the same efficiency? Is there a plan to allow TRUNCATE to be used as above in future Informix Releases.