Edit a PDF created in document builder

LGraf ✭✭✭✭

If a document builder generated PDF needs editing, is it possible to do that directly in Smartsheet? It seems that the PDF needs to be downloaded, edited on desktop, and re-uploaded to Smartsheet, which cancels out any convenience that the automation otherwise provides.

Separate but related, is it correct that document builder is compatible only with fillable PDFs and that the underlying data must be pulled only from the sheet that the automation is nested in?