import to category
I don't think so. I believe it regenerates all that content each time you move something. The fastest way would be to create a backup or copy of your section and experiment. Try changing the order and see if it regenerates. If not let me know and I'll have a look through the internal code.
I imported the records with empty lineage and breadcrumb (these 2 fields was required) for the first level. I changed the order manually from cmsb and the records for the special category fields (globalOrder, siblingOrder, lineage, depth, parentNum, breadcrumb) are generated.
After that I imported the second level records again with empty lineage and breadcrumb but with parentNum and after I changed the order for one record again and everything regenerated again filling the fields as needed.
Thank you for your help on this!