If you have a collapsed or ‘continuously rasterized’ precomposition you want to fade in after effects you can add a ‘Transform’ effect to the precomposed layer so not all your masks will show up in the fade!
![Fade Precomp](http://www.dukostolwijk.nl/wp-content/uploads/FadePrecomp-1024x576.jpg)
If you have a collapsed or ‘continuously rasterized’ precomposition you want to fade in after effects you can add a ‘Transform’ effect to the precomposed layer so not all your masks will show up in the fade!