Hi TechPundit,
I can make this additional data connection and re-publish the form on the same place to replace the earlier form template?
Yes
Will this action be able to display information that has already been submitted on forms, before this data connection was created? There are already 17-18 forms with s lots of data submitted on this sharepoint library. I want to display certain information from these submitted forms on the sharepoint library.
The data will be loaded each time you open your form, you will see all the data displayed on your default sharepoint view.