because Mozzie wanted to Neal to continue conning, and Neal was done with it. he had already told Peter that of ALL the ones he knew including Mozzie and Kate, he TRUSTED Peter and that Peter was his best friend.
he HAD to leave Mozzie out of the loop, to not look for him. but, he did leave this: go back to the beginningand Mozzie didmaybe Mozzie is hoping that he would somehow return.

You sir, just made a perfectly good point. Just too bad I didn't see it before now

So you call your title a spoiler and then go ahead and include the spoiler info? I'm not impressed.

It's obvious that Mozzie was NEVER out of the loop, but he didn't let Peter in on it until a year later when some of the heat had died down. Mozzie is the one who left the wine bottle out on the stoop with the clue 702 on the cork. Mozzie left the Queen of Hearts in the storage room for Peter, letting him know that he was in on it. And Neal needed money to go to France, and conveniently Mozzie had $23 million in unrecovered funds from the heist. They needed to lay low, but it seems that Mozzie was ready to leave for Paris after letting Peter know that Neal was alive.

Yes its about escaping from the FBI but its more about protecting his friends from Pink Panther reitribution.

Having them believe he was dead was the only way NC could finally be free. The FBI brass would have held him in anklet indefinitely. Then, later, the clues NC left behind lead them to the container wherewell, you know the rest. Or should.