PDF Due Date Updates

I need a tidy, invisible update to my existing PDF: 3–5 due dates must be replaced with the new ones I’ll supply. Everything else—layout, fonts, spacing, links—needs to remain exactly as it is so the document still looks final-print ready. Please work with a professional PDF tool such as Adobe Acrobat, Illustrator, or InDesign, then send back the corrected PDF (and, if possible, the working file) for my archive. Quick turnaround and an eye for pixel-perfect accuracy will win this job.