The former is the one he seems to be currently taking to task for failing to follow the law, the latter is the one that meaningfully handled the case.
https://noyb.eu/en/gdpr-rights-sweden "GDPR Rights in Sweden: Court confirms that authority must investigate complaints. So far, the Swedish IMY has taken the view that users don’t have party rights in GDPR procedures."
https://noyb.eu/en/noyb-takes-swedish-dpa-court-refusing-pro... "IMY frequently just forwards a complaint to the company that illegally processes personal data - and then immediately closes the case without investigating." (no decision on this as far as I know. A bit surprising since it has been almost 2 years)