Bryan,
I see what's happening here. You have two options (this is all done within 2.fla):
1) Reimport the swf. First, double click on 1.swf in your library. Then, delete Layer 1. Create a new layer. Select the first frame in that new layer. Next, go to File > Import > Import to Stage. Choose 1.swf from your HDD. Click Open. It'll take a few seconds to import..and all should be well.
2) Import the swf programatically. Click on 1.swf on your stage, go to the properties panel and assign it an instance name (i'll use animation for this example). Then, create a new layer on the main timeline, rename it to actions and click on the first frame in that layer. Then, add the following ActionScript 2.0:
animation.loadMovie("1.swf")
The code assumes that you have 1.swf and 2.fla in the same directory. If you don't, either move them so they are or change the path.
Test and if done right, you'll have imported the SWF.
The second method is by far the most efficient way to do it. It keeps your file size down. Ideally, you should add a preloader. Lee Brimelow has some great video tutorials on how to do this at gotoAndLearn() (http://www.gotoandlearn.com).