Product Serial No.s & linked Files

Doli V 15.0.1

Hi all
I am really impressed with this software. I haven’t been using it long but it will make a great difference to my work.

Firstly,

If I attached a document, to a serialised raw product, (example. product 1) as it comes in to stock.
That part is then used in the manufacture of the end product, (product 10)

Any linked files such as certification, CoC’s that were attached in to product 1, appear to not follow through to product 10. Product 10, after the manufacturing process/BOM etc, is not showing those attached documents.
Is there a box I have missed that will make ‘product 10’ have the documents from ‘product 1’
This is the basis of any traceability for our products.

Secondly.
During the manufacturing order, when adding parts from the BoM, is there any way to increase the size of the serial/Lot numbers box. Mine is only showing maybe 5 digits, and realistically I could do with maybe 12 digits wide.

Any help, most appreciated.