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Appending- how to avoid duplicates?

Question asked by t.faull on Mar 27, 2017
Latest reply on Jul 30, 2018 by einar.dorheimgeodata-no-esridist

I have two point shapefiles, both have the exact same fields in them. There are some new records AND some duplciate records when comparing the two datasets.

I want to use the append tool as I don't want to create a new dataset, I just want to add data to the existing original shapefile.

 

However, when I append the two shapefiles, matching records are appended, thus leaving lots of duplicate records. How can I tell my script to only append new records and ignore duplicates?

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