De-Locking of locked Objects

Hello,

with EP6 SP2, if I for instance create a System, a UserMapping for this System, an iView using all these together and if than I want to change the System properties - the portal says this object is write protected - the object is locked by user dbeutner (wow, this is me myself!).

Do I have any chance to delock this object manually?

It even stays locked if I log off and log on again 😔

Is there any sense to write-protect the object against changes by the owner of the lock himself?

Questions over questions... Any answer?

Thanks in advance

Detlev