I have a friend who just got a Panasonic HMC150 camera that records in AVCHD format on SD cards. I notice that it breaks the footage from one continuous shoot into 4GB chunks.
I'm not familiar with that format or the proper method to pull the footage into Vegas. I've been working with MXF files from a Canon XF camera, and for those files, I just do a search in Windows Explorer for all .MXF files and then drag them directly into Vegas. I've never had any issues with the boundaries where it switches to the next file.
Can you do that with the AVCHD files, or is there a different way to import those? The camera came with some software, but it doesn't look like the software gives you a way to consolidate and export all the separate pieces into one clip.