do you know why it moved, ie, water movement, lighting, etc
how long have you had it
most anemonies move when they need to to get a better place for them (not always where you want them
)
if you must move it then an ice cube will work, also if it is on the glass then a hair dryer will also work, These are very stressfull for them, and i only recomend this if you think it is in danger (maybe to close to a pwr head, etc)
most anemonies will move all around the tank until they find their spot, if you know why it moved, more/less light, more/less water movement then try to change this in that spot and try to creat the same spot near by
JMO, from what i have read, i do not own one
TD