You can use the BookXRefs file to rename xrefs.
The RenameXRefChar parameter defines the character that tells the
Import XRef Definitions command to rename the xref rather than change
its definition. Set the RenameXRefChar parameter to a value (a single
character), then use that value as the first character of the "definition."
The next time you run the Import XRef Definitions command, those
xrefs will be renamed. You cannot rename an xref to a name that
already exists, but you can replace it (see Replace specific xrefs in all files in a book).
For example, the following sample file will rename the
HeaderOnly, HeaderQuoted, and HeaderAndPage xref definitions to
HeadingOnly, HeadingQuoted, and HeadingAndPage. The RenameXRefChar
parameter is set to "#" and that character is used as the first
character in the "definition."
[General]
AltBookXRefsFile=
DeleteXRefCode=
RenameXRefChar=#
ReplaceXRefChar=
EditorType=0
[Groups]
Count=1
1=MainGroup
[MainGroup]
HeaderOnly=#HeadingOnly
HeaderQuoted=#HeadingQuoted
HeaderAndPage=#HeadingAndPage