Fragging Cespitularia

Hey there everybody,
I bought a cespitularia frag that is just going nuts in my tank. I haven't fragged it before and was curious if it is fragged similar to Xenia. The way it is growing is its sending these runners across the sand (probably looking for a surface to attach to). Can I just frag it in the water and chop the runner so that I can attach it to a plug? Will the runner recede back to the mother colony? Or should I make two cuts. The first cut by the base of the mother colony where the runner begins and a second cut at the end of the runner for the frag. Anyone have any experience fragging this coral? Thanks everybody