AI Batch Renaming vs Individual Renaming

The last two projects that I have uploaded have had some strange issues with the AI naming.

Batch Renaming of "ALL" sheets has yielded incorrect text. In some cases completely unrelated text. An example is below. #1 is the actual sheet name. #2 is what ZZ renamed the sheet. If I select the page name and rename on a page specific basis, it has been correct every time.

This particular project has "Existing First Floor Plan" and "Proposed First Floor Plan". On multiple occasions ZZ has renamed as "First Floor Plan". Omitting the "Existing" or "Proposed".