New install of VirbEdit, how to import existing library

Hi, until recently I was running an older version of Virb Edit (2.9 I think) on my PC and the import and export clip folders were on the same machine. Everything worked great.
I have just re -imaged that computer with Win10 and installed the latest version (5.1.2) of Virb Edit on it. At the same time I moved all of my existing media files onto my Synology NAS.

My question is, how do I link the new install of VE to the existing media library on my NAS?
In settings I have pointed the media folder to the correct folder on the NAS in the hope that the existing video clips would show up in VE. Do I need to Import ALL of the clips again? Does this copy everything back to my PC (which I don't want)?

thanks