MARC field sort into numerical order when record is imported

Overview: When a MARC bib file is imported, the fields sort into numeric order, instead of staying in the order that they were in the original file. This is a regression from Fameflower.

Current workaround: none

Steps to Reproduce:

1. Log into FOLIO-snapshot as diku_admin
2. Import the attached file, using the secret button
3. Review the order of the 5xx, 6xx, and 7xx fields in the records in the original file versus in SRS
4. Log onto Fameflower (https://bugfest-fameflower.folio.ebsco.com, abreaux/admin)
5. Import the attached file, using the secret button
6. Review the order of the 5xx, 6xx, and 7xx fields in the records in the original file versus in SRS

Expected Results: The fields in the SRS MARC record should be in the same order as the fields in the original MARC file

Actual Results: The fields are being sorted into numerical order in the SRS MARC record. I'm not sure when this started happening, but it may be related to the fix that moved the 035 created from the 001 field up to be with the rest of the 035 fields (MODSOURMAN-320)

Additional Information: See attached video

Reported by JMPajerek/Cornell