In ArcGIS Online, using the Move function in My Content erroneously reports that the item is already in the folder and cannot be moved.
Last Published: May 12, 2015ArcGIS Online
Bug ID Number
April 13, 2015
August 21, 2020
After review by the development team, it has been determined that this issue is related to a known limitation with the software that lies outside of Esri's control. The issue's Additional Information section may contain further explanation.
This by design to prevent creation on layers with same name and type.