+23In the current ChangeDetector, Original Unchanged and Original Deleted features have Ports, while Revised Added features also have a port. Can we please have a "Revised Unchanged" port added?
This is because the ChangeDetector can be used for just some attributes, rather than all attributes, meaning it may be testing a range of scenarios, yet we lose the "Revised Unchanged" features by using the transformer, and this may be the subset we want.
+22Good point. The old argument was that the "Unchange" are unchanged, so it doesn't matter if they are original or not. But I get and see and believe the point here. Thanks.
+2Think the ChangeDetector could do with a good overhaul to increase flexibility. I've come across a few gotchas using this and it's cousin the UpdateDetector custom transformer.
+40I had to reverse the ports on the UpdateDetector custom transformer because of this. I wasn't checking all attributes, but I did want the Revised feature to come through.
Maybe a setting that controls which "unchanged" features are output.
+22This idea has been implemented for FME Desktop 2019.0. The ChangeDetector have been overhauled to replace the UpdateDetector and this includes a new parameter which permits users to choose which unchanged features (Original, Revised, or both) are output out of the Unchanged port.
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