When performing a cross-server merge, templates are handled as follows.
Models and template have the same GUID, a template has been changed
Both templates remain unchanged on the relevant server. This means that neither of the two templates is adapted to correspond to the other template.
Models have the same GUID. The templates have different GUIDs, which exist on the target server
Source overwrites target: The target model refers to the same template as the source model.
Target retained: The target model refers to the same template as before.
Models have the same GUID. The templates have different GUIDs, and the source model template does not exist on the target server
Source overwrites target: The target model refers to the same template as the source model, and the template exists on the target server. This means that the target model is handled as though no template were assigned to it.
Target retained: The target model refers to the same template as before.
Models have the same GUID. The templates have different GUIDs, but the same name
The merge is based on the GUID and not the name. Thus, the merge behaves in the same way as described in the previous two sections, according to whether or not the template exists on the target server.