Subject says it but to expand on that...

I have inherited a messy, unused system.

Want to install a new GWIM system into the same tree (different container) with *no* history or contacts lists brought over from the current system. It will run on a new server.

Q1. Can I run a second separate system (both v2) in the same tree ?

Q2. How do I ensure the contacts lists are cleared out ? I know these are stored as attributes on the user object. Is there a tool to clear these out in bulk ?

Any other thoughts or tips greatly appreciated !