[capslock]

I use Calibre to manage my PDF library for my Sony PRS-650.

1) Does the location of my PDFs matter? If I move some PDFs from one directory to another on my computer, will it affect their connection to the Calibre library? Relatedly, if I rename PDFs on my computer, is it necessary to re-add them to the Calibre library?

2) If I want to add a lot of PDFs to my device, but I do not want to edit the metadata for all of them immediately: can I add these files to my library, send them to my device, edit their metadata at a later time, and have these changes register on my device (without having to remove the copies on the device and replacing them with the edited versions)? I understand Calibre has no Sync function, so I would like to know if I can do something like this without removing and replacing the relevant files.

3) Is there a feature that would allow me to rename a PDF (and edit metadata) in Calibre and have it apply the changes to the source PDF? In other words, if I changed the title of the PDF and edited stuff like author information in Calibre, can I save myself the trouble of doing it over on my computer separately? This would save a lot of time if I found myself having to re-add files to my Calibre library: editing unappealing data, like files with author 'rANDOM aUTHOR' (I'm sure I can reverse such issues, but the solution is still desirable as some PDFs might misspell the author's name, for instance).

4) Can I configure Calibre to use as 'title' the name of the source PDF, rather than using the metadata?

EDIT: I have edited my initial post to organize my questions.