I appreciate the detailed response, bbcukiah,

Aside from the solution provided by MaryLandT, there is another way to move the balances in bulk from class to another. You can create a journal entry to move the balances. I'd recommend asking other accountants insights about this. 

Otherwise, we'll need to go through each deposit and update the assigned classes.

Feel free to keep us posted if you have other concerns that require our assistance.