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Merging ploygon layers causes change in polygon shape

Question asked by jm1939 on Jan 31, 2012
Latest reply on Jan 31, 2012 by Dan_Patterson
Hi all,

I have multiple large shapefile layers that contain a large quantity of polygons. When I try to merge these shapefiles together there is an unusual change in many of the polygon's shapes. Additionally, some polygons seem to grow and cover a larger area than before, some are split up in to many smaller polygons, and there are even polygons added that were not there before. If all of the polygon shapefiles are in the same projection, could anyone possibly think of another reason this could be happening?

I appreciate the help!

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