Dear Bozana,
Yes, thank you, this answers my question.
I was confused by the sentence in the statistics documentation saying that “the new reporting tools are able to generate reports from both old and new data sources”, or as you state it: “you can still generate the report for those data in the same way”. Now I understand that I can still generate reports for old data, saved before the upgrade, but that I cannot continue to generate new stats data in the old way.
Thanks again you for this clarification!
Best
Armin