When using movieclips in the main timeline, one often faces the problem that the movieclips will not be displayed properly. Mostly this is due to the graphics or text in the movieclips are hidden in the first frame and will fade in or fly in from the one side. This makes it harder to work with the movieclips in the main timeline – it is not WYSIWYG – you don’t see what you get.
This has been annoying me for quite some time, until I realized what to do. The fix is actually pretty easy, and I’m actually ashamed to not have seen this before. This might even be common knowledge, but here it comes anyway.
One the first frame of your movieclip make a representation of the clip, how you want it to display in the main timeline. This can be your graphics or text as it is fully displayed, for example at the end of a fade-in. Or it could be some other kind of representation like an arrow indicating some movement.
Then simply add an action to the first frame:
That should do the trick.