Adding FortiWeb

So I need to add FortiWeb to a FortiAnalyzer. I understand ADOMs will be required. My question ... in turning on ADOMs, will I lose anything that's already in there?

Will be able to move various FortiGates to other ADOMs once enabled without losing their history?

We have a multi-tenant FG cluster with multiple VDOMs (root, client1, client2, etc) plus client based FGs. I would certainly like to be able to move FG-client1 and VDOM-client1 to its own ADOM on the FAZ.

Should I just enable it and see what happens?