The group that is mislabelling episodes is usually consistent for each series. For example, right now on my main tracker there’s one group that’s labelling The Simpsons one week early. So I’ve added a tag to The Simpsons in the series view, then added the groups name to “must not contain” for that tag so sonarr ignores The Simpsons releases from that group.
I’d be surprised if this wasn’t the case for you. It wouldn’t make much sense for a group to flip back and forth between episode numbering schemes in the same series.