When using two registries, do you register for the same items?

My step sister is planning one of my baby showers and wanted me to choose two places to register, I had only registered online at Amazon so far. I agreed with her that some people wouldn't go online and to minimize off the registry gifts I should register at a brick and mortar store, so I chose Target. Do I put the same items on both registries and just return duplicates? Some items are obviously only available at one place, but there are several overlaps. So far I have basically two of the same registry at two stores. Does that seem right to you ladies?