I noticed I had the same issue in some of the process, some others were shown as complete, but when I check to output, I noticed the process has returned empty feature class, without any object. another issue I faced in ArcGIS Pro was when selecting features by their attributes, especially with time-series data, querying the dates using the query builder usual introduce "time Step" term in the code. the solution was to switch it to the SQL and delete the "time Step". The last issue is when editing features, filling the attribute through the editing session was not always reliable, in many incidents after filling up the attributes, I discovered they show up as NULL. That being said, I noticed there is an improvement in retrieving data in ArcGIS Pro compared with the desktop. Contour data for Delaware state was taking forever to get it loaded on ArcGIS desktop but it was easier on ArcGIS Pro. Also. Editing datasets from the server in ArcGIS Desktop, like that one for local government and utilities, at some point, used to take me the whole day trying to get it working, especially when it is about the time to perform post & compress process.
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