I[DRegenerate Operation. Generates a new GUID for the loaded package and updates the package ID property with the new GUID. ...

I[DRegenerate]

Operation. Generates a new GUID for the loaded package and updates the package 
ID property with the new GUID.  If a package was copied then the user may 
desire to generate a new ID for the new copy so that it may be be uniquely 
identified in logging data.