Not sure if this is what you want but, to move some from one category to another try this. Tick off the ones you want to move. (little boxes on the left). Go to the bottom and hit the Change Category bar. Then select the category you want them in. Hope that helps.
The only way I can think of is, if you make a new specific category in the journal that you want to move them to and then do the same as I mentioned. I tried it and it works. You can move as many as you like, but you have to tick/select each of them. There is no way that I can see of moving the "category'', you have to move the entries.