I am wondering how to update actorsdata, e.g. to add/change a actors photo or update the filmograpy by script without deleting the actor from the database. Is there a way to get this? It seems to me that 'addactor' do not update the data in any way.
Well, I never have checked that but I would think you should set the option to overwrite existing data and then do a re-update on the desired actor(s). Maybe you have to remove the field Filmography if you don't wanna change the settings.
In order to achieve what is possible, you have to try the impossible over and over again. Hermann Hesse