Some embodiments provide a method for an integrated network management and modification analysis system. At the integrated system, the method receives a proposed modification to configuration data for a logical network stored by the integrated system as a set of rules. Without implementing the proposed modification, the method analyzes changes to the rules that would occur based on the proposed modification. The method provides a graphical user interface (GUI) that indicates logical network entities affected by the proposed modification. In response to a command to implement the proposed modification, the method generates an updated set of rules at the integrated system and stores the updated set of rules for distribution to managed forwarding elements that implement the logical network.