Raising sectors change to orphaned sector type

Due to a glitch in the data map tags, in Level 13: The Factory, of Doom II, the sludge room containing a rising walkway to a switch has a glitch where the visplane texture does not change when the walkway rises when it is walked over, which means that the player still takes damage from the sludge visplane. The glitch occurs when the player walks out of the sludge into a tag which raises a part of the walkway. This can be particularly frustrating to players when looking for relief after walking out of the sludge.