I am trying to copy and paste features into an impervious surface feature class from an AutoCAD DWG. In the past we have been successful with this however we recently upgraded from ArcMap 9.3.1 to 10.1 and since then we have only been able to copy and past 5 features at a time. To verify it wasn't just an AutoCAD problem we checked and are also having the same problem with our address points feature class and other polygon and line feature classes. The computer has plenty of memory and processing power. Is anyone else experiencing this type of problem and if so have you found a solution?