DDL doesn't contain INSERT and DELETE transformation

When I want export view model to the DDL, DLL doesn't contain INSERT and UPDATE transformation which are in the view table.
I looked at the documentation and in my opinion, DDL should contain two triggers.

CREATE TRIGGER ON ProductsInfo INSTEAD OF INSERT AS
<transformation>

and

CREATE TRIGGER ON ProductsInfo INSTEAD OF DELETE AS
<transformation>

When I write this trigger on the DDL, teiid DDL importer ignores them