I've got several hundred Adobe Livecycle Forms in XML format that I want to convert to flat PDF files in order to combine groups of them with additional flat-file PDFs as a continuously-reading (not portfolio) PDF. I've seen that printing XML forms to PDF will allow them to be combined, but that requires opening each file individually to print to PDF. Is there a way to convert an entire folder full of XML files into flat PDFs?
You can use the approach you mentioned earlier, or consider AEM Forms, or a third party "flattener" tool that will convert the XFA form to a static document of record.
What do you mean by XML format? Do your forms need to be merged with data, or can they be printed as-is?