I have a small cherimoya in a bucket size pot and during the winter it got wet( water evaporates slower) and it was affected ,new shots developed small deformed leaves and the top died.
What i did to recover it was to squeeze the pot a little until somme cracks formed in the soil .
Water logging its bad because it stops the oxigen going to the roots but now the soil got more aerated because of the cracks and it dryed faster.
I will be planting my cherimoyas on the top of a small hill that il create in the greenhouse to avoid waterlogging for them.
Interesting that pond apple its related to cherimoya and grows in swamps tolerating water logging and i think it could be good as a rootstock for cherimoya in wet soil.