I'm guessing this is from a DSLR. Yes, that's the behavior in 10.0.6. The archive is treated as a card and the media is copied from it into the event as if it was coming from a camera. Camera archives are supposed to remain separate and untouched from the media you edit. There is no way around this in the current version.
See the discussion that is running next to this one about missing media.
Work around, create prores files, but that takes time.
help to read the OP... Message was edited by: Tony Gay
Found a solution to this. Go to your files on your CF / SD or whatever card you are pulling the files from, or even if you already copie them to your external HDD, go ahead and rename them something else than what the camera called the files. I also, just in case, get them out the original folder, and put them in a new folder within the extrenal HDD you are working from. And voila, problem solved. No need to "Copy" the files on to your C:
After getting mad about this change I have a no brainer workaround.
We have a similar workflow. We copy the media off the cards to double backup drives.
A third copy goes to our RAID for fast access, just like your Thundbolt drive.
The trick is to change the folder structure of the media, so FCPX does not think of it as a 'camera'.
Just move all your video files & JPGs out from the EOS folder to the top enclosing folder, next to the DCIM.
Once the files are there, just use the import command and you are ready to edit. No wait, just like before.
Killer shortcut: Just drag the files over your Event and FCPX will use the prefs and not copy anything in.
Hopefully, Apple will fix this in the next update.
Please send them feedback, they listen.
Let me know this works for you guys.