I have a 13-page document in pdf format, went to add 65 pages of forms to it, by choosing the "insert files from your computer" option - clicked on all 65 of them, and hit enter. But all 65 of them are identical to the first of the 65 pages, and can't seem to fix it - tried to rename the 65 documents, but no matter what i do, it seems the adobe program is only recognizing any "form" kind of document as going to be identical to the first one uploaded.
That's because all of these forms contain fields with identical names, and when you combine them to a single file they become duplicates of one another, with the same values.
One possible solution is to flatten all the files before merging them, which will convert the fields to static contents and allow you to merge the files without merging the data in them.
Form fields with the same name are the same, so they get the same value. Which is why merging forms doesn't work. You can put all the forms into a porfolio, or you could flattten them all before merging into a single PDF. Or you could merge the data from the forms into a CSV file. Or you could do all of these things. But just merging the filled forms into a single PDF won't work.