Occasionally, you may create an updated version of your model and desire to substitute the older version without the need to reconfigure elements such as custom supports or modifier meshes.
To accomplish this, simply right-click on a model within the 3D view and select "Reload from disk" from the context menu. Alternatively, you can click on the editing icon located in the object list on the right side.
The Reload from disk feature is also compatible with custom modifier meshes, which can be added in Expert mode.
When reopening a 3MF project file, you have the option to reload any of the models.
By default, 3MF project files are configured to not store the full path to the source models due to potential security risks associated with sharing such files. If the full path is not saved and "Reload from disk" is requested, QIDISlicer will prompt you to locate the source file.