Looks like a sorting issue, can you share screenshot of the WF that creates line items?
Also note that there has been some improvements to the Schedule API WF on a list lately (see : [Feature Enhancement] Schedule 100k Workflows with Schedule API Workflow on a List), thus recursive might not be the best way to accomplish what you’re tring to do.
If it’s a one time thing and your Bubble plans allow it you could also import your data to the new datatype.