Unfornately there is no undo (or as other Adobe applications, call it, 'Break Apart') 'Symbol' command, though it would make for a great request.
The best option, at the moment, is to
- Enter Edit in Place for that particular Symbol;
- Edit > Slect All;
- Edit > Copy;
- Exit Symbol In-Place mode;
- Then on your Stage, Edit > Paste Special > Paste All
Even then it will not be perfect because if your Symbol timeline has Triggers and Labels, the above process will not be copied/pasted. They will have to done separately.
Thanks for your very prompt and useful help.
I have the same problem. I just made an animation that plays automatically and wanted it to play on scroll with scroll effects in muse but muse will only do this on single layers animations and symbols make it multilayer animations. When I try to break my symbols apart to put them all on the main stage through the above method, all of the alignment is out which means having to alter everything again. There must be a better way of doing this.