It is treated as a different callsign because the eQSL coming into our system was addressed to pa5mc/qrp.
You can't have the eQSLs show up in the same inbox/archive, but what you *can* do is this; log into your pa5mc account and go to the 'My Accounts' page,
http://www.eqsl.cc/qslcard/MyAccounts.cfmGo to the bottom and create a new, attached account for pa5mc/qrp
The credits for all attached accounts are combined for awards, so once you have done that you should have your 50 countries.
Dave, VA3KAB