Creating Auto-Duplicate Text in Multiple Form Fields

I am using Adobe Indesign CC and created a master template, which has text form fields. I want the text form fields on page 1 to duplicate to page 3, so that when someone types in their name, in the "Data" field I created, it automatically duplicates to subsequent pages. I copied the text form fields from one master page to the next and when I create a PDF, form the master, the files duplicate. When I use Data Merge the text form fields do not come in as the same text field, it creates subsequent text fields (eg. "Data", "Data 1", "Data 2", "Data 3", etc.....). I want all the "Data" fields to be the same. How do I go about doing this? I am fairly new, so I need specific steps. Thanks