The script only changes EPDs that are linked to the impact categories of EN15804+A2 (EF3.0) to the impact categories of EN15804+A2 (EF3.1). It does not change any values or EPDs, it only tells the software that v3.0 EPDs should be linked to the v3.1 LCIA method, because for the full product system calculation, you can only select one method to calculate your results. And you can only do it if the programme operator allows v3.0 EPDs to be used inside the product systems of new EPDs that must be always calculated with v3.1.
The script only works if both methods are present, and if EPDs are actually present that are connected to the old v3.0 impact categories. The script will also not work if the old EPDs are linked to the EN15804+A1 method that was based on CML, since these EPDs are anyway not valid anymore and/or not allowed to be included in EN15804+A2 assessments.
Have you imported v3.0 EPDs? And have you imported them in the EN15804 add-on or in a database containing the right methods?
