Cross-brokering/flipping an offer can be a very dangerous game and you have to be careful if you try to do it yourself. It's dangerous because of the high risk of your offer being abused by fraudulent affiliates. Example: JoeFraud is running the eFax campaign through MaxBounty. We turf him because he's sending fake leads. You take the eFax campaign from MaxBounty (as either a network or as a pub bringing the campaign to another network) and JoeFraud decides to run the campaign through you. You don't know JoeFraud was previously booted, so you wind up sending a bunch of fake leads from him. You wind up not getting paid for the leads, and you could even damage MaxBounty's relationship with eFax because eFax is seeing the same fake leads again from the same fraud publisher and they could get pissed off.
Not only that, not all networks do a thorough job of screening their publisher applications, so you could wind up getting TONS of fake/fraud leads. I've seen this first-hand the few times we've tried cross-publishing our campaigns with other networks. Because of all our bad experiences, we've pretty much stopped exploring the cross-publishing of our networks as it exposes us to too much risk.