Hate to burst anyone's bubble, because I am late to this thread.
3 days after cutting this animal in half, it wasn't "eating" because it didn't have an oral cavity. These are very simple creatures that lack a brain. Much of what they do we would consider "reflex" reactions. The reflex to seize a food object is not necessarily related to whether or not the animal has the capacity to ingest the item or digest it. We use terms like "hungry" with these animals when they probably don't have the capacity to feel "hunger". Does a plant feel "thirsty" when it hasn't rained in a few days?
Regardless, we have observed, time and again, that it takes months for these animals to recover from being cut in half - if they recover at all. For some reason, anemones seem to appear healthy immediately after being cut in half, and then usually start a slow decline from which they do not recover. The "danger time" seems to one to two months after being cut in half. If the two halves "survive" after two weeks of being cut apart, it doesn't seem to indicate anything about long term survival. When we use phrases like "so far so good" we really should reserve them for 2 months after cutting the anemone in half. The complete healing of the mouth, column and base has to be seen before we can start to think about breathing a sigh of relief

You can see in the photos that even one month after cutting neither half has a healed mouth.
I hope these two halves survive, I really do. But it frustrates me to see people doing the same thing, over and over, and expecting different results.
And I wish people wouldn't title their threads with "xyz anemone propagation" unless you already can show one year of survival of both halves. Because otherwise you are just cutting an animal in half. Sorry I don't want to sound like I am flaming anyone and I don't want to get flamed in return, but nothing was done in this case that hasn't been done before, with low success rates.