Hi, the Excel export of SimaPro is typically just a result table, this cannot be imported into openLCA, but the SimaPro csv files can be quite nicely imported. You can decide to apply a mapping or not, if you import into an empty openLCA database (without flows etc.) and do not apply mapping you can 100% preserve the SimaPro processes (with the "low pop." categories etc.), which can again be exported to SimaPro, but you can also apply the mapping and use processes then in openLCA just as other processes.