Trunk does not save custom model data

[stijnb1234]

Describe the bug
The trunk does not save the custom model data of an item.

To Reproduce

1. Spawn vehicle
2. Put item with custom model data in it
3. Despawn vehicle
4. Restart server
5. Spawn vehicle
6. See item without custom model data

Expected behavior
The custom model data should be saved.

Server and Plugin Information

• VehiclesPlus Version: 2.4.1