TOC Layout- ok to duplicate entries?

Hi,

How have you handled a TOC where duplicate entries seemed useful? This Webhelp project includes many reports in multiple projects as shown below.

Thanks for your thoughts.

TOC

Report Types (book) (this complete list of reports is required by our company)

   Bird Project Reports (book)

• Report 1 (page)
• Report 2 (page)

  Fish Project Reports (book)

• Report 1 (page)
• Report 2 (page)
• Report  (page)

Tree Project Reports (book)

• Report 1 (page)
• Report 2 (page)

(much further down the TOC)

Bird Projects (book)

• Finding Birds (page)
• Keeping Notes (page)
• Bird Project Reports (book) (you can see that duplicating the report lists would be useful in these project sections)
  • Report 1 (page)
  • Report 2 (page)

  Fish Projects (book)

etc.