Confused: Loading AS 2.0 in AS 3.0

So I’m having trouble loading in AS 2.0 based swf’s into a AS 3.0 gallery site I’m building. From what I’ve read you can’t communicate between AS 3.0 and AS 2.0 without using LocalConnection. What’s confusing is some swf’s I have successfully loaded without the need for LocalConnection so I’m not 100% sure where you need it. I can understand if you needed to pass variables from the AS 3.0 holder to the loaded AS 2.0 swf but I don’t as they are all self contained.

I have some banner ads that utilize keyboard input and mouse drags etc. I’ve found that I’m getting mixed and inconsistent results from loading different files. What’s even more weird is I have a fairly complex AS 2.0 game which I’ve tried loading and loads fine with all keyboard input, custom cursors etc working fine. (This is all without LocalConnection too by the way).

Was wondering if there was any tips and things to check when loading AS 2.0 based swf’s into AS 3.0?