The challenge is that this workflow is not giving Premiere Elements what it needs to set up its project properly, as it would if you used miniDV or AVCHD footage.
First you'll need to manually set up a project. Select the New Project option from the File menu and, no the New Project panel, click Settings. On the Settings panel, select Hard Disk, Flash Memory Camcorder/Standard 48 khz. Click OK to return to the New Project panel and, on this panel, check the Force Settings option.
Then, to get rip your video from your finalized DVD, go to Premiere Elements' Add Media and select DVD or Computer Drive. This will open the Video Importer, from which you can now rip the video from the disc to your hard drive while adding it to your project.
Assuming your JVC unit is making standard DVDs, this should solve your problem. But, if not, there are other things we'll need to tweak.
Sorry that this is so convoluted, but it's the nature of the way you're getting your video digitized.
If you're trying to respond, Tom, you'll need to post your response to the forum.
If you just respond to your e-mail, a blank response is posted to the forum (which is what happened last night).