QGIS » QGIS Application

In QGIS 2.12, having a layer from a Postgis table with Z component geometries, it's not possible to save as/export the data.

You can test it by creating the following table in Postgis:

CREATE TABLE test
(
gid serial primary key,
name character varying(100),
geom geometry(MultiPolygonZ,4326)
);

and inserting a record like the following example:

INSERT INTO test (name,geom) VALUES
('polygon 1 single flat', ST_GeomFromText('MultiPolygonZ (((-30.0 42.0 0, -30.0 41.0 0, -29.0 41.0 0, -29.0 42.0 0, -30.0 42.0 0)))',4326));

Open it in QGIS and try to save as. You will get the following error:

Export to vector file failed.
Error: Feature write errors:
Feature geometry not imported (OGR error: )
Only 0 of 1 features written.

This works well in QGIS 2.8.4, therefore I have set it as blocker.