The old PowerPoint container became a PDF 1.6 file with one page in our fixture run.
The PDF text probe returned only a page break for our generated PPT, matching the missing text in the PPTX rewrite.
Text boxes, tables, charts, and shapes are flattened into a page rendering rather than left as PowerPoint objects.
Our office engine uses server-installed fonts, so old Arial or Calibri choices may render through available substitutes.
The export targets slide pages, not presenter notes pages or comments attached to the source deck.
Build steps and transitions are collapsed to static slide pages because PDF has no PowerPoint timeline.
Our office engine carries the imported slide size into the PDF page size when the PPT import succeeds.