Neighborhoodmanager file - safe to regenerate?

[PlayLives]

Hello..

What does the the neighborhoodmanager.package do and is it safe to delete/regenerate?
I deleted it because I took out a hack and I wanted to "clean" my neighborhood since it seems the results of the hack was still there. Anyway, when I loaded the game the "you added a new expansion pack" message came up and the neighborhoodmanger.package was regenerated. None of my sims were reset or anything like when you really install a new expansion.
So my question is, did I inadvertently screw something up?

[J. M. Pescado]

No, it seems to be harmless to nuke the manager file.

[PlayLives]

Thank you El Presidente 

[jrd]

As far as I can tell its only purpose is to remember which neighbourhood was last selected.