I am trying to setup a workbench for change detection where multiple users will upload data for change detection. I need to be able to handle the following cases
1. User 1 adds features to fgdb and uploads. Writer fgdb has 4 features now
2. User 2 adds features to a separate fgdb that does not contain user 1 features. Writer fgdb has 8 features now
3. User 1 now has fgdb with all 8 records, he deletes two records and uploads. Writer fgdb should have 6 features now.
Here is a screenshot of my workbench. I can get item 2 to work but not 3.