When I'm in the link media dialogue and click on a specific external hard drive and then click "search" it doesnt search that drive, it starts searching my entire Macintosh HD

When I'm in the link media dialogue and click on a specific external hard drive and then click "search" it doesnt search that specific external hard drive, it starts searching my entire Macintosh HD. I dont remember this being the case in the past. can this be fixed?