Hi Janneke

in a similar problem,
it helped to update the spatial index:

---------
CREATE TRIGGER update_geom AFTER UPDATE ON watersources BEGIN

UPDATE watersources SET geom = Transform(MakePoint(east, north, 4326), 32638) WHERE id=1678;
-- I have done this in my trigger
Select recoverSpatialIndex('watersources','geom');
SELECT UpdateLayerStatistics('watersources');

END
------------------------



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