Records shown twice and recently even three times

Hello.

I have a very big problem for a customer. Our online solution runs at several customers and all but a also has no problems. This a customer has its data imported and not entered manually. I think this is an error in the data or the database, but it can not locate.

In DataTables many records after editing some records, now shown twice and recently even three times.

In the database, they are, however, only once. I can detect no error in the database ....

Unfortunately, the debugger is not running well. He tries to save the data and remains available and the browser is timing out. To see what extensions I use here DebugCode the same table with another database: unoqog

Here times eingie Screeshots because the system is a closed system (user name and password are required).

http://www.rappi.de/download/error1.png http://www.rappi.de/download/error2.png

Does anyone have any idea where I could see and what remains to be tested?

Best regards

Thomas