Judging by the selection boundaries in the screenshot, there's still some complexity going on in that mushroom-thing on the left and the cog on the right. And the ring parts seem to have some heartline involved. So there are still some elements to clean up, maybe by simplifying or converting them into plain paths and compounds.
I wonder if it has something to do with the new version, or whether it's just a coincedence. Have you been using this file before ?
Does importing (in stead of pasting) make a difference ?
I'm sorry, I completely missed your reply. However I've used this exact same design before to copy and paste and it has worked just fine. Importing this instead of pasting does not make any difference. I can't say with certainty but my gut tells me it has to do with the new version since I've used it in the past.