So that the prefix can be moved without having to unlock anything else that might be moved accidentally.
Thanks.
This is a known issue when we support the LOCK function, it is hard to implement at present design.
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Brand new interactions and interfaces.
Smooth support for design sizes of over 3W
devices or 10W pads.
More rigorous design constraints, more
standardized processes
For enterprises, more professional users.
Easy to use and quick to get started.
The process supports design scales of 300
devices or 1000 pads.
Supports simple circuit simulation.
For students, teachers, creators.
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
This is a known issue when we support the LOCK function, it is hard to implement at present design.