Please check following:-
1. Cargo was loaded in container or not, if cargo was stuff into container and need to re-loading to new shipping line then please keep at previous schedule. (ss.Nanta Bhum v. N220)
2. The new schedule should be direct call TPT, LKB or PAT only (set as prior by TPT, LKB and PAT)
If you can follow two above instruction then you can change earlier schedule.