In August 2022, the MIX-UP consortium took the opportunity to meet for the 5th General Assembly and intensively exchanged ideas about the progress of research. Unfortunately, due to the ongoing tense Corona situation in many regions, not everyone made it to Strasbourg, where the meeting was held at the facilities of our partner SOPREMA. However, by now we already have some experience in organising hybrid meetings, so it was possible to connect the partners on site with the partners at home. Once more we can report a very successful meeting with many interesting presentations and lively discussions. We are already looking forward to the next meeting in February 2023. This time, hopefully, with the chance to meet everybody in person.