Well, it's only an idea, not sure at all, but when Forte disapeared, Bergger bought part of the material. And this material was brought to a plant. As far as I understood, this material was moved to foma plant.
Bergger films are being to bo reintroduced soon in production. But I don't know in which plant. If we have a reflexion, Forte films were coated on ¨PET base. Harman, were Bergger produces now his papers, coat on acetate base. Photoengineer told us, that machinery for coating on PET and acetate are different. So Bergger shoul collaborate with a firm that can coat on PET base, i.e FOMA, Efke or filmotech.
If we think that a part of "ex-Forte now Bergger" coating material is located in Foma plant, maybe we can think that the modifications are the introduction of the forte material in foma plant.
Well this is just a supputation, not a certitude at all.