Hello @Bruce.Rader,
I hope you are doing well, and thanks for reaching out and sharing all the details.
You're right that InDesign flattens form fields when a fillable PDF is placed; that's expected behaviour. Use Acrobat Pro for duplicating pages and form fields while retaining fillability. This is the only supported approach.
Please note that the suggestions below may or may not work, as they depend on the environment of the app and the machine. Also, ensure that you have the latest build of Acrobat installed on the machine.
Suggestions:
Start with your fillable business card PDF: Open the card in Adobe Acrobat Pro. Confirm fields work using Prepare a form. https://adobe.ly/4eMadNI
Create a letter‑size (8.5×11) page: Go to Organize Pages, choose Insert > Blank Page. Set size to Letter (8.5 × 11 inches). https://adobe.ly/49kxO4D
Duplicate the card form fields (not just graphics): Switch to Prepare a form. Select all form fields on the business card. Right‑click > Create Multiple Copies. Use: Across and Down options to create a 2×5 or similar grid. Adjust spacing to match card size. This retains full fillability.
Ensure each card is independently fillable: After duplication, rename fields. Fields with the same name share data. Use unique names (e.g., Name_1, Name_2…).
I hope this helps.
Regards,
Anand Sri.