While your anemone may divide in the near future because stress (recent shipping) cause division in Magnifica, having two mouth is not a sign that it is about to divide.
I have had multiple Magnifica anemones divided in my tank before.
1. My observation is that the anemone initially looks poorly, partial deflated with dilated mouth.
2. The next step is a hole formed on the foot plate. I would see the rock though the dilated mouth and hole in the foot.
3. The hole dilated and ripped larger where the partial deflated anemone look really bad, form an "O" shaped animal with large area of bared rock right in the middle of the anemone.
4. The anemone start to move in two directions, and one of the side ripped apart forming an "C" shape animal.
5. The anemone continue to move apart and the other side also ruptured forming two "C" shape animals.
6. The two animals each move to it's own area and round up, healed and form a new mouth on each, two fully formed animal resulted and start to feed again.