The stats that are shown there in your profile are the session totals. In other words, it's the total amount of data transferred since the torrent was started. If you restart the torrent, or in some cases, if you seed from multiple locations, every time you get an update from the other IP address, or every time you stop then restart a torrent, it will refresh the stats. With that being said however, it will still accumulate the transferred amounts to your grand total.
SO… If you're seeding and say only ONE of your locations where you're seeding has transferred anything, when your seedbox updates, it will push those stats to the profile page there, however as soon as your next location updates, the site will see it as a different IP address, and thus as a different session, and will replace the total on the profile page with the reported total from your other location. Once your seedbox refreshes with the tracker again, the stats will be pushed to the grand totals, and the display amount in your profile will change, but once you get another refresh from the location that's not transferring to anything, it will consider it (at least for display purposes) to be yet another new session, and will reset the totals on the profile again, without affecting your grand total.
So... Yes... Traffic IS being accumulated against your grand totals, even though the site does not display the same amount in your profile as it shows in your torrent client. If you were to reduce the seed locations to just ONE location and keep it active, you would notice the stats would begin to build and accumulate there in your profile. So... Even though they do not appear to be accumulating in your profile listings, they ARE accumulating against your grand totals, which is what your overall ratio is calculated on anyway.