Try opening the form from a process hen put the clear pasword assignment after the enter new command, take the rule OUT of the bo rules.
So now the real password field should get filled AFTER the user has presed save and the confirmation request should not fire:
ENTER NEW [BO Name] using [form name]
BO.RealPassword=BO.ClearPassword.
I tend to name the clear password field with something that is not obvious and is also misleading, such as AddressLine7 or MothersName - just to fool hackers