What is the best way to migrate the User Defined fields, Software
Collections, Contracts, Purchase Records, Catalogue Records and Licensed
Products to ZCM?

I have run all of the options in the ZAM migration tool. The User Defined
fields did not migrate even though it said it was successful. The other
records do not appear to even be "migrateable" with the tool.

Also, there are other things like Web Page Usage tracking that need to be