Well it has been awhile since I had checked mine...but it seems to be showing up very wrong for both sites for me. PTS and BTC Qt clients show all tx's as going through though.
So there should be no issues even if the websites are not capturing the correct amount...is this correct?
Don't worry about it. Check the transactions in your wallet, and look them up with blockr.io. You will probably find that the "from" address does not agree with the address that you think you have. This is because the default Qt client creates "change" addresses every time you send coins. Example:
You have 1.0 BTC in your wallet, address ABC
You send 0.3 BTC to another address, XYZ
The transaction is printed in the blockchain as "ABC sends 0.3 BTC to XYZ. ABC sends 0.7 BTC to DEF"
The new address DEF is also owned by you, and the private key is in your wallet.
However, you never know that you own DEF because the standard wallet is not transparent about this process.
Later, you send 0.2 BTC to UVW.
This shows up in tbe blockchain as "DEF sends 0.2 BTC to UVW. DEF sends 0.5 BTC to GHI"
So now your 0.5 BTC is actually under address GHI, not ABC or DEF. However, ABC, DEF, and GHI are all stored in the same wallet.
Because of this behavior, it is common for folks to send BTC to somebody else, and look for the transaction and not find it under "their" known BTC address. This is because some of their BTC are actually stored under different addresses.