It is possible to mount a NTFS volume directly into an empty folder.
More info For example, you could add another hard drive(or use your second one), create a NTFS volume, move everything in the Imported Items folder to the root of this new volume, then mount it directly into your now empty imported items folder. As far as any program accessing it is concerned, it's just a regular folder. You may have to make sure your permission are correct, but other than that, you're done.
Unfortunately , if you already have any files/folder on your current second hard drive, things could get a little messy as they will appear in the II folder also, best to start with an empty volume.
This is very useful for programs like AC where everything is in one folder. Use one small, fast volume on mirrored SSDs for the AC folder containing the databases, and another large, slower volume based on cheaper hdds for imported items. Nice to avoiding having to buy TB plus sized SSDs just to hold imported items. I've been running this kind of setup for years with no issues.
If you've never done something like this before, I would find someone who has, or at least learn how to on a non-critical system first. Anytime you mess with whole volumes, you risk lots of data...always have known good backups.