If you have released an SAP transport and have had export problems or have (recently) lost the exported cofiles and data files, here’s a way to re-export the transports and get a new set of co files and data files.
A simple way is to run tp export on OS level and follow the syntax, the only problem with this is I have found inconsistencies with the target clients. I have not been able to set more than one target client while I might have a target group in my stms config. i.e.: the exported transport from DEV should come up as having 3 or 4 times in the QA import queue with different clients number.
A complicated and a not-so-recommended method is to sqlplus and change the status of the transport to not released in the table E070.
TRKORR and TRSTATUS