This one is a good sensible idea from a customer.

If an automatic income entry is created for a tenant for their rent income, then when the rent changes, that automatic income entry also has to be changed to reflect the new rent value. 

But computers are designed to save time, so save time it does.  When the rent changes, the system now automatically looks for automatic income entries for the same tenant, with the same frequency as the rent frequency, and with the same value as the previous rent amount, and changes the amount to the new rent value.

This applies to both manually changing the rent amount on the tenant details screen, as well as preloaded rent changed.  With preloaded rent changes, the automatic income entry is changed at the same time the rent amount changes.