My suggestion should actually help as the geometry is detach from the LoadGroup.
However, as the load that you will apply to your model are linked to load cases, and the load cases are linked to the load group, you need to use the load cases from the template file
.
The custom relationship can be created in the template
file.
I have solved temporarily an issue related to the LoadGroupDefinition
in the following .dll
Have a look at the attached example. It should be self-explanatory for you
LoadGroup_example.zip (61.2 KB)
FemDesign_24_0_0.WIP_2.zip (1.2 MB)