If you use
-C option with
rsync then it initializes an exclude list which contains
.BAK files along with many others.
You can use
man rsync and look at what all is excluded by the
If you want to copy the
.BAK files remove the above mentioned option from your command. Although, Note that this will mean that anything which was previously excluded due to this option will also be copied.
Thus your new command would be :
sudo rsync -ravp --delete /home/administrador/ArquivosAL/ /media/administrador/Seagate\ Expansion\ Drive/Backup