Now that the field related to allows linking to any other thesaurus within the activities group, we need to solve another issue. The diffusion of activities on our website uses the generic actv model. For now, we have implemented a solution locally that we are not sure is the correct one, but it works.
We've implemented field_varchar with properties:

The problem will be that when we update the ontology, this change will be lost. Therefore, we would need you, when possible, to update in master the dissemination of that field. Thank you very much.