Hi Rasmus,
Welcome to the E-Learning Heroes community!
I understand you're seeing a warning from your LMS about your newly imported SCORM packages. For Rise 360 courses, we only listen to the 'unload' event in the aicccomm.html files, but it is paired with a 'beforeunload' event which should still cover the deprecated 'onunload' event. This means the change shouldn't impact your courses, and you shouldn't need to modify your SCORM packages.
Here's a similar thread on this topic. If you'd like to connect with one of our talented Support Engineers about a specific course, you can submit a support case here. I hope this helps!
