The game lets me place a molten connector adjacent to a pipe connector if there is nothing where the connector is. The game also lets me put a molten connector on top of an existing channel. However, the game won't let me place a molten connector on top of an existing channel if there is an adjacent pipe connector.
If I demolish the channel first, then I can place the connector. The result is the same as if I had been allowed to place the connector on top of the channel, it's just more tedious and feels like an unnecessary step.
