on the example of the process
https://onebox.constantagro.com.ua:44553/admin/customorder/postachannya/540/edit...registered customer obligations (by action) = 497430.7256 (order amount at the process rate in system currency)
incoming payments converted into the system currency at the rate of the order = 0
warehouse operations for the amount = 494,412.687
balance of liabilities = 3018.0386, when converted to process currency - 90.09
You probably mean not related processes, but child (nested) processes.
Liabilities do not take into account the payments of subprocesses, unless the corresponding settings are enabled in the system.
But in order for the payments of subprocesses not to be taken into account in the amount of payments, you need to set the action 'Ignore payments of subprocesses' at the necessary stages of the process.