The names given to the MediaFiles in the Avid MediaFiles folder are unique to Avid and is managed by a database. Since Avid uses OP1a, meaning each track of a clip is a separate file, the names you see will have an A or V and other unique info.
The actual camera original file name will be either in the TAPE or SOURCE FILE column depending on how the media got created. If via AMA link, it will be in the SOURCE FILE. That is what is used for unique identification, relink, merging and other metadata operations as a SOURCE/REEL ID.
Michael