Understood. You may be able to use my Character Manager plugin, and change the z index of the player or the rope dynamically when the player is about to pass below the rope.
But also, if the rope is above a tile that the player can pass, then, you don't need for that specifically rope event to be a platform. That rope event can be a regular event. If there is a tile below it, means that the player will never fall there. So you can also remove the region/terrain tag for that specific tile coordinate.