Hi, it is not about the name (openLCA uses id numbers to recognise all elements, not the name), but indeed GaBi and ecoinvent (from ecoinvent) do not really fit together, and thus we provide two different LCIA method packs, one for GaBi and one for all other databases. It is not only about the flows identified / recognised in the different methods, but factors for the same flow can be different, for the same category, in both methods. Unfortunately, of course, but this is not too often the case.
A combination is possible apart from these cases, where the same flow has different characterisation factors.