For me, I use a stainless steel scraper, if u dun hv, use penknife also can but they rust easy. Slowly slice the base of the xenia off the rock it is attach to. Careful not to damage the tissue of the xenia. Once u slice a stem of xenia, stick the base of xenia to frag plug or piece of small lr using superglue gel. Another easier way is to use scissor to cut any stem off. Stick to plug or LR using superglue gel. The area when u cut off will usually heal & grow back really fast. If u dun wan it to grow there( too near to ur other zoas or corals ), the area where u cut off, scrap off the remaining base of the xenia. It works for me, hope it does for u. Cheers.