I agree, it should be ok as long as you didn't cut up the roots when you dug it up. Cherimoyas are very tough plants, kinda hard to kill it.
When I move my 2yr old seedling cherimoyas for up potting or to separate the bunch (10) of seedlings I grow for rootstock, I just flip the 5 gal pot sideways and dump out the seedling plants. Then I separate the individual plants and put each one in a pot and when I do this most of the soil is complete off the roots. After you plant your tree back in the pot, if the tips of your branches start to wilt or look bad in a week, just cut off some of the branch back about 12" and it should grow new buds from leaf nodes below the cut. Use a size of pot that is big enough for the roots on your tree, maybe a 15 gallon ?
I think with cherimoya replanting, just like any other plants, the key is to not have it out with its roots exposed to sun or drying out before you put it in the pot and water it immediately. You can always add some B1 if you feel the need, I never do except when I take air-layers of branches, and before I pot them I like to soak them in B1 with water mix for an hour.