Move Files and G-Metrix

My notebook is equipped with a ssd, which is not very big. So I bought an external USB 3 hdd.
Now I´d like to move some of the files, to free some space. But when I just move the files, it will be marked "red". Cleaning would delete the g-metrix.
When I change the clip-location, the hdd has to be always connected. And when rendering, it will be much slower.
Both ways are not perfect for me.

What would be great:
  • To move specific files from Virb Edit to different locations, so they are still connected to the library and G-Metrix
  • Automatically export G-metrix to move the files manually and don´t loose the data for later edits

Exporting every single g-metrix is really pain in the a**. You have to click several times for a single video. And when the camera is set to "auto recording when moving" you will have a lot of clips in a small period of time.

Would it be possible to automate exporting the gmetrix to backup them or automate moving several files to a different location?
That would be great :)