I don't have your camper, but I think you are correct. The frame probably was designed for the lines to go through it.
Here is what happened according to Dave. FR routed the lines through the hole unsecured. (cost saving) Less than a year after purchase (warranty period) owners found a leak at that point from chafing.
FR solution was to change the routing of the lines, solved poor design.
From your pics it looks like if you wanted to, you could take a couple of clamps off then reroute the lines trough the frame. Either use a rubber grommet or a clamp and stand off to eliminate the possibility of chaffing.
Just like we do on aircraft. (Heli911)