Hi Heidi team, Following my chat with Vine on July 5: Heidi's field recognition fails on certain government medical forms (e.g., VAC PEN 6221/6235), detecting 0 fields and reporting the PDF as unsupported or corrupted. The cause: these are XFA forms (XML Forms Architecture, made in Adobe LiveCycle), not standard AcroForms. In XFA files, the form layout, fields, and data live in embedded XML packets rather than as PDF page objects — the only visible page is a "Please wait..." placeholder, which is what Heidi is actually parsing. Standard field extraction therefore finds nothing. This matters because many legacy government and insurance forms are still distributed only in this format, and clinicians must use them as-is. I have about thirty such forms; manually recreating fields for each is not feasible. It's solvable: other AI tools (Claude by Anthropic) now fill these correctly by reading the XFA "template" packet for field definitions and writing values into the "datasets" XML packet. I'd ask that Heidi (1) at least detect XFA forms rather than flagging them as corrupted, and (2) ideally support filling them. Happy to share sample files or test a beta. Best regards, Stefan Eberspaecher