What happened?

Description

After updating to version 0.9.1, importing an older version's JSON configuration file causes the floor management functionality to glitch. Specifically, floors can neither be dragged nor deleted.

Steps to reproduce

Steps to Reproduce

1. Export a JSON configuration file from an older version (pre-0.9.1).
2. Update the application to version 0.9.1 (or later).
3. Import the older version's JSON file.
4. Try to drag a floor on the canvas/interface.
5. Try to delete an existing floor.

Expected behavior

Expected Result

• Floors should be draggable and adjustable.
• Deleting a floor should remove it successfully from the layout.

Browser & OS

Chrome windwos11

Screenshots or screen recordings

No response

Additional context

No response