If however you’re an integrated student you’ll study the ATPL GS then go on to the CPL/ME-IR, If you drop out half way though the CPL/ME-IR then you leave with nothing.
Perhaps a bit pedantic, but that's not really true, is it? If for some reason that's what happens, you still get the piece of paper saying that you completed the ATPL exams. As for flying, you keep the hours and the experience. But this is a bit academic as I don't see why you would stop in the middle of doing a CPL or IR. Fair enough if you somehow take a break after the ATPL exams or even the CPL to earn some money and come back to it all a year later but it would be unwise to stop in the middle of the most expensive part of it all.