You have a number of options, you can import an .m2t file and have the basic file cataloged with metadata but without thumbnails and without being playable, or you can import a ClipWrapped or FCP-captured HDV movie but without the metadata, as it's been thrown away by that stage. The best way to import files and preserve metadata is using Live Capture Plus to create proxies by downconverting an entire tape to DV, then send those to FCP and batch recapture just those clips you want to edit with there. Alternatively, if your clips and ClipWrapped files are named the same way, you may be able to bulk attach them to the HDV files but that could get a bit fiddly.
1. I did the normal scene detection with the Cat. DV down convert of the HDV file.
2. Opened the DV capture up in the Verbatim Logger. and Copied the scene information to the clipboard.
3. Opened up the HDV capture and paste special into the scene window on the right.
4. The marks matched up!
****word of caution..i've been using clipwrap to rewrap the m2t files to QT there is a -3 frame timecode difference for some reason. You can adjust this in CatDV with a TC offset and then add timecode track to QT.
*****the marks can look off in the viewer of CatDV...but when you open them in FCP they are OK.