Hi choref81 (any relation to a choréfée in ballet?) Welcome to the Forums...
Sorry it has taken so long for you to get an answer. I had been rather hoping our regular AVCHD/high def guru, etech, would have jumped in by now. But I have to say that he does not appear to have been around for a few days now...
Unfortunately, my own high def camera (Canon HV20) does not use AVCHD. However, it is my understanding that there is no real "capture" from them, only the import you have noted. You can do this without VS, however. Only the normal Windows transfer/copy function is needed to transfer them to your hard disk in the computer. And it was my understanding that while you might not be able to import a folder as such, you open the folder, highlight all the video files and simply transfer them to your hard disk.
Sorry if I am sounding as though I am trying to teach grandma to s*ck eggs. I am not -- I am just trying to get my own thoughts in order... It is again my understanding that there were a couple of difficulties with AVCHD when it first emerged as a high def format. The first, and major, one is that it requires a pretty powerful computer to handle it -- not to import the files, but to actually edit them and, more to the point, even be able to play them smoothly. At the very least a Core 2 Duo or Quad is required for that. (I well recall that my old P4 2.0 GHz with HT could not play them smoothly at all...)
Then there was the fact that the original VS11/11+ seemed to have the sort of problem you are describing now. This was corrected in the 6 November update patch and 8 November Power Pack which upgraded VS11+ to 11.5+. Since then, just about all AVCHD users apart from you, have reported no problem such as you have described.
So something is obviously different in your set-up. The most obvious thing I would like to rule out is basic. I know you say you have VS11.5+. However, in recent weeks it has become apparent that a number of users have not understood the misleading advertising of 'VS11.5+' for sale on the Ulead/Corel websites. When they have bought this version, they believed they were getting VS11.5+ as it was and didn't read the fine print. In fact, they were only buying VS11+, and they still had to go to the Ulead download site and download and install first the 6 November 2007 update patch and then the 8 November 2007 Power Pack (not/not the 'Hot Fix' which is only required if a user has experienced only the specific installation problems described for that fix...)
When that is done, your version number (? > About Video Studio >) should be 11.5.0157.2 So can you confirm absolutely that this is the version you have, please?