Custom General Accounting Manager Role unable to remove Subledger Accounting Manager Duty

Summary:

We are trying to create a custom General Accounting Manager Job Role by copying the seed role, then remove XLA_OVERRIDE_SUBLEDGER_JOURNAL_ENTRY_PRIV and XLA_MANAGE_SUBLEDGER_JOURNAL_ENTRY_MANUALLY_PRIV from the custom Subledger Accounting Manager duty role. After creating the custom Subledger Accounting Manager duty role, we tried to remove the duty from the custom General Accounting Manager Job Role under Role Hierarchy. However, we are getting a warning that "You can remove only roles inherited by the current role."

How can we replace the Subledger Accounting Manager duty role for our custom General Accounting Manager job role with the custom Subledger Accounting Manager duty role?