Do you not have the bin with the original master clips from the original import? If not you can always go to “set bin display” and select “show reference files” and click off all the other clip types except for master clips. This will show you the original master clips before all the subclipping and syncing occured.
Relink works when the media is being managed and in the Avid MediaFiles folder or OMFI MediaFiles. What you are looking for is “Batch Import”. Select clip(s) in bin and connect that way.