When I have ChipScope Inserter or Analyzer open, Project Navigator does not detect updates to my sources. Why is this?
The ChipScope Inserter wizard modifies the project files. The lock on ISE changes is to eliminate problems with multiple modifications at different sources in the implementation flow. The Analyzer does not need this behavior, however, and this will be updated in ISE 11.1 so that an open Analyzer window will not lock down ISE.