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#FORMAT is a compulsory record in every SIE type and PC8 is its only legal value. We only emitted it when the caller opted into cp437 byte encoding, so the default UTF-8 download had no #FORMAT line and strict importers (Visma Spiris) rejected the file with 'Etiketten #FORMAT saknas i filen'. Cloud exporters (Fortnox, Bokio) ship UTF-8 bytes with #FORMAT PC8 and importers detect the real encoding from the bytes, so the tag is now unconditional. Also formats #ORGNR as nnnnnn-nnnn per spec; company_settings stores the org number without a hyphen. Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com> Co-authored-by: Claude Fable 5 <noreply@anthropic.com>