Acrobat: How to move a group of text boxes which appear on all pages of a document

Thank you Rene Andritsch but the process you're describing won't flatten form fields, it's the one used to flatten transparencies.

Acrobat Pro has three flattening methods:
- flattening transparencies (which you describe),
- layer flattening,
- flattening of form fields and comments (the one we're interested in).

To flatten form fields, use either :
- JavaScript directly in the JS Console:

this.flattenPages();

- a dedicated utility such as the “Flatten” plugin which is part of my (free) abracadabraTools.

Thanks @JR Boulay for this great trick. As @CE707070 is new to Acrobat theses are the steps to “flatten” a PDF file:

With Acrobat Pro, follow the steps below to flatten your PDF (related article can be found here https://www.adobe.com/acrobat/hub/how-to-flatten-a-pdf.html

1. Make a copy of your PDF.
2. Choose Advanced > Print Production > Flattener Preview.
3. Adjust the Raster/Vector balance.
4.  Go to the “Discard Objects” tab and activate the option “Flatten Form Fields”
5. Select Convert All Text To Outlines. (optional)
6. Deselect Clip Complex Regions.
7. Click Apply to flatten the PDF.
8. Close the Flattener Preview dialog box.
9. Print document.

Generally I would advise to make such big changes likes moving text boxes in the application the PDF was created in your case this would be MS Word. Do you have access to that document? This would be the fastest way to move all of those text boxes. The manual way in the PDF would be to copy the element from the first page, where you adjusted it, and paste it onto the other pages. Depending on how many pages you have it will take the respective time to do it. At the moment I cannot think of an automated way to do it in the PDF.