Updating existing feature classes with new data from Shape File

Discussion created by Aubin_1 on Jun 17, 2013
Latest reply on Oct 2, 2013 by rborchert

I've been trying to figure out how to merge or update the existing feature class with no luck. I've tried various tools with no success.
I have many Oil & Gas Feature classes. The government supplies updated shapefiles for these every few months.  I want to keep the old data from the feature class, while adding any new data which may be in the shape file...

Thanks for any suggestions :)