Here's how to 'Save as New Version' using Foxit PDF Editor's Cloud iManage / iManage Work / iManage 10 integration.
For iManage 10 (Work) end-users would login using the iManage 10 entrance in Foxit PDF Editor.
Once logged-in you will notice a new iManage10 Tab appear on the ribbon.
This will allow you to 'Save as New Version'