Self explanatory. Any ghosted enemy when imported and put in a quest in that version and alpha has a really slow speed. They move for sure, but they move extremely slow it's amlost like they aren't moving at all.
This happens with any ghosted enemy that uses any type of step speed to move around. Examples include the popo script, the ropa script, anti-fairy script, and Moosh's Newbie Boss script.
I am using Windows version of 2.55 Alpha 73