To reproduce the bug, follow these steps:
- Start the dungeon editor and create a project with one level.
- Create a room in the level and add an item (ex: Altar) to the room.
- Select the item (so the properties appear in the right-hand panel).
- In the Project pane, right-click on the name of the level and add a second level.
- In the Project pane, right click on the name of the first level (the level should appear in the main pane) and delete the first level.
I'd be happy to supply information about my system, test fixes, and so forth if needed.
-Roomon1