I mean text document is lengthy therefore edited in and stored to multiple text document files. Citation style in use uses numbers in brackets at the point whee citation is made, e.g. University of Aleppo - Faculty of Medicine. Every part document is maintained on its own, also regarding citations. That means publications cited are numbered sequentially and for every part document numbering starts from 1. But when all get merge to final complete document using LO Writer master the numbering of citations should be continues and may not restart from 1 somewhere in middle of complete document (neither stream of citations, bibliography index).
Unfortunately I don’t know. Maybe you could report your findings here?