Yes, that is a potential issue when copying an existing Info Item which has a Url referencing a local document (which can be synced), I would recommend that you instead create a simple template which represents a new, blank Word Document and then Insert a new Info Item based on this template rather than copy an existing Info Item, which avoids this issue.
See this help file entry (
http://www.kinook.com/UltraRecall/Ma...ttemplates.htm) for information on creating a new template containing a stored, blank Word document.