Hey Marc40k, I have noticed a small bug, it seems that deconstruction planner does not mark the cliffs for removal (at least on Nauvis, I did not check yet on other planets). Removing by hand works fine though. Any ideas? (I have bunch of other mods installed so maybe something is interfering, not sure)
I am unable to test the mod at this moment. Could you verify that it's not an interaction with other mods? Or that your deconstruction planner doesn't include cliffs in the whitelist.
Edit: According to the wiki https://wiki.factorio.com/Cliff_explosives, cliffs can be marked for deconstruction after cliff explosives have been researched. If I have time I will look into patching this behaviour.