Hello @AlixVezina, I believe this tool is quite similar to the Load Data Tool (Append). I get to this tool in the Catalog Pane of ArcGIS Pro by right-clicking on a geodatabase feature class. I think this is mostly a fantastic tool and have been using it since I discovered it many years ago in ArcMap. I use this tool to bring together multiple county datasets into one feature class for use within our Computer Aided Dispatch system for locating addresses in emergency fire and medical calls. However there are some shortcomings: 1. In ArcMap, within the Field Map portion of this tool, it was nice to see the attribute fields in the same order as displayed in the attribute table. Also it displayed the same field names as well. In ArcPro the field list is alphabetical and is not using the field aliases - or not sure what it uses. This gets down right confusing on choosing the Source fields to import my data into fields to the target dataset. If there could be a choice to use the feild order or alphabetical order that would be a big improvement. As for the field names it is hard to describe what to fix or provide options. 2. In many other geoprocessing tools we can save out a .cal file to later import for the next time we run a tool. It would be EXTREMELY helpful to be able to save out the field mapping to something like a .cal file. This combined with the first point would make this tool so much better.
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