Rename Level 0 to Default

After converting several DWG Block files to a cell library I am wondering whether or no to rename the level named "0" to "Default".  I'm not really sure what a DWG Layer 0 is intended for.  It looks like there are no elements on it.   A level usage analysis shows this:

Is there a reason I should do this?  Is there a key-in to do it via Batch Process?

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