What Switzerland asks for
German is the language this route runs in, so that is what your paper is turned into. A certified translation into German in Sheffield is written from a scan; your English document stays exactly as issued and is never marked or amended. The German pages arrive as a signed, dated set, written by a translator sworn before a court, because Switzerland reads the text as a record.
Why an old version is not simply re-signed
People often assume the German they already own can be dusted off and stamped. It cannot, and the block is not a rule for its own sake. A signature ties one named person to one exact wording. Signing someone else's sentences would mean vouching for choices you never made, in a language where a single wrong term shifts what the sentence claims.
There is a second reason, and it bites more often than the first. Wording drifts. An old file may name a body that has since been renamed, or use a term the writer picked for a different purpose. Reading it as a draft catches all of that, whereas re-signing it would carry every old choice forward with a fresh date on top and nobody the wiser.
What does carry over
Quite a lot, as it happens. Your name as it was rendered before, the spelling of your town, the way a school or an employer was described, the German term chosen for an English job title: all of that is read first and kept where it was right. Consistency across two files matters more to a reader than any single elegant phrase does.
So the old pages earn their place in the envelope even though they are being replaced. They cost nothing to send, they often shorten the writing, and they stop the new set contradicting something a Swiss office already has on record. If the earlier wording was plainly wrong, it is put right and the change is flagged to you in writing.
Cost and timing
The rate is £25 a page, counted before any writing begins, so the size of the bill is not a surprise at the end. Standard work runs 2–4 business days and express work 24–48 hours. Both give you the same signed set; the quicker route buys the translator's time rather than a different or better version of the pages.