There are Invalid Transactions with Message/Status = 'New Transaction' that are not being processed by the Post Transaction to Financials job.
Run the following query to find out how widespread the issue is:
select * from IMP_TRANSACTIONIMPORT
where importstatus = 'N'
and pac_imp_header_id != 0
An update to set pac_imp_header_id = 0 would be needed to have the transactions go through.