Hi Andreas, thanks! I have given it a go in openLCA 2.0, and it seemed to have worked. However, there are only a selected list of impact categories with the EF3 ILCD reference package (not the full list of 16 impact categories). The ones I have are:
Ecotoxicity, freshwater_inorganics - 2017
Human toxicity, cancer - 2018
Human toxicity, non-cancer - 2018
Human toxicity, cancer_metals - 2018
Human toxicity, non-cancer_inorganics - 2018
Ecotoxicity, freshwater_organics - 2017
Climate change-Biogenic - 2017
Ecotoxicity, freshwater_metals - 2017
Human toxicity, cancer_organics - 2018
Human toxicity, non-cancer_organics - 2018
Eutrophication, freshwater - 2017
Resource use, fossils - 2017
Climate change-Fossil - 2017
Climate change-Land use and land use change - 2017
Not sure if that was your experience too?