I also see that you deleted lots of manholes before, for example in changeset 130013231:    
https://www.openstreetmap.org/node/6723137085/history      
https://www.openstreetmap.org/node/6721742185/history      
https://www.openstreetmap.org/node/6790254785/history      
https://www.openstreetmap.org/node/6721742086/history      
https://www.openstreetmap.org/node/6721742186/history      
https://www.openstreetmap.org/node/6721742287/history      
https://www.openstreetmap.org/node/6724487386/history      
https://www.openstreetmap.org/node/6721742289/history       
https://www.openstreetmap.org/node/6698971389/history       
https://www.openstreetmap.org/node/6721742096/history      
https://www.openstreetmap.org/node/6721742095/history      
https://www.openstreetmap.org/node/6721742097/history        
https://www.openstreetmap.org/node/6721742098/history      
https://www.openstreetmap.org/node/6721742099/history      
etc..      
And in changeset 6721742093:          
https://www.openstreetmap.org/node/6721742093/history         
https://www.openstreetmap.org/node/6779123786/history      
https://www.openstreetmap.org/node/6779131287/history         
etc..       
And in changeset 129971335:            
https://www.openstreetmap.org/node/6721742092/history          
And https://www.openstreetmap.org/node/6721742091/history       
...      
And many other changesets.      
Can you please explain why you keep deleting them?     