Is an "automatic save" function (or another system that aids in recovering from a PC crash or power failure) available for Project Navigator?
The only "AutoSave" system in ISE design tools works when you exit the software without manually saving your work. As the software exits, it saves the last settings of everything in the project. These settings are restored the next time you open ISE.
If power is cut off from the PC midway through an ISE session, this AutoSave feature does not activate, and whatever changes have been made since the last AutoSave or manual save are lost.
The software does not regularly automatically save a project during a session.